static local variable c#

There are tons of features in C# that are not strictly "object-oriented". It's of type char. It is zero, by default. OK, so the next solution is, if you want to maintain state then this shouldn't be a method, it should be a class, perhaps with just a single method, perhaps even static. The default value of static variable is 0. That is not what the thread is about. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. However, in the second case, the variable b was assigned a pointer allocated with new. Difference between static class and singleton pattern? an static field, invisible outside the method. Why would Henry want to close the breach? I do not see howthis offers any advantages over what is currently available. Is it possible to hide or delete the new Toolbar in 13.1? the state variables in the method(s) calling this method, passing the data in each time as a reference. Where a and b are used only with the main () function because they are local variables declared only . In C and C++, what is the advantage of making a local const variable static? you want to do that? variables with limited visibility.) Obviously, they would have to be stored in some fashion on the Managed Heap with the object instance, in a fashion identical to an instance variable. For example, 'a' is of type char with a value 97 on an ASCII based system.A character or a string of characters together in double quotes represent a string literal. has in C#): http://msdn.microsoft.com/en-us/library/s1sb61xd.aspx. the static variables initialized only once and it . We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. Mathematica cannot find square roots of some matrices? Using "static variables" lets you retain the value of a variable that may go in and out of scope during execution, yet remain valid.A static variable has the scope of a local variable although the lifetime of a module level variable. It can be used with both variables and functions, i.e., we can declare a static variable and static function as well. There's a major problem with local static variableswithin a method. I already said this over a year ago, but regarding implementation/storage: a static local variable in an instance method would simply be an instance field, only invisible outside the method; and a static local variable in a static method would simply be Obviously, they would have to be stored in some fashion on the Managed Heap with the object instance, in a fashion identical to an instance variable. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. C/C++ The purpose of static const local variable [closed]. I could say you lack the discipline to control your By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. What I'm talking about is like a class member, but with even more restricted visibility. to do with what the original poster asked about and was looking for. is waste of time. that is when the method-level static vars can get GC'd. He didn't ask how YOU write code, he asked how to do static locals A. I see no compelling reason why C# should include this feature. You need to read the entire thread, especially my first reply. that is when the method-level static vars can get GC'd. Use an instance variable---no static declaration---to The simplest example is to directly use a parameter to intialize the local static variable. A. Did neanderthals need vitamin C from the diet? A. I see no compelling reason why C# should include this feature. That's data hiding one step forward. The content you requested has been removed. Assuming the var is actually const. Why was USB 1.0 incredibly slow even for its time? When there is a conflict between the global variable and local variable, the local variable gets the precedence, that . Arguing about what other languages do and how it would great to have that feature is an argument that The same can also be achieved by using global variables or static member variables. The location will be different. An ordinary variable is limited to the scope in which it is defined, while the scope of the static variable is throughout the program. we can't just create features without any practical applications either, so I see both sides of this. Thank-you. If you wish for other code to be able modify it while your method executes No, the key is the difference between lifetime and visibility, perhaps you're not familiar with static local variables in C. A variable that is discarded when the method completes is a regular local variable, a static local variable would not. Here is a concrete example where a static local variable would be useful: Here the tableName regular expression should be static, because it doesn't change and compiling a regex is fairly expensive. Butnow you have gone off into something elsethat is completely different, nowwe havestatic methods with local static variables. http://rudedog2.spaces.live.com/default.aspx, Javier AP already pointed out that there is no difference in implementation, "And once compiled they can be implemented as the same thing. any differences generally? Not me, either. And if that restriction exists just because people keep asking "why would The vars of the method are out of scope and elegible for GC, but here's this static method with local vars that are still referenced. Thank-you. You could always use one of the hallmarks of OOP and encapsulate such a method within its' own class. Now let us understand static variables. Because For example, we can use static int to count a number of times a . variable, but now it has to check if the variable is an instance variable or a static variable, which would slow the CLR down when it accessed instance variables because of the additional check. Their values then persist between invocations. Mark the best replies as answers. I only see it slowing down the CLR because the CLR checks for null prior to accessing an object instance. If it's not possible, it's not possible, and you can offer alternatives, but insulting someone by claiming they don't have the discipline to do something makes you look like an arrogant dickwad. Plenty of other OO languages support it and the world hasn't ended because of it. C++ guarantees that static local objects will be destroyed in reverse order to their construction. Finally, VB allows them, and its C/C++ common practice. static variable per instance. I stumbled across this thread because I was specifically looking for a way to make a variable in method static. This is why old threadsare bestleft alone, What purposewould a local static variable serve? If you wish for other code to be able modify it while your method executes No, the key is the difference between lifetime and visibility, perhaps you're not familiar with static local variables in C. A variable that is discarded when the method completes is a regular local variable, a static local variable would not. A static variable persists, even after end of function or block. It ought to be a staticlocalvariable. Myself I would like them introduced in a future C# version. Static local variables are initialized once only, before program startup. Nowadays, C++ has compiler/standards support that automatically makes this static singleton initialization thread-safe. So there shouldn't be a "major redesign", they are just private members(for instance counts) or static private members (for class counts) that are invisible outside the scope of the method. static int x = 5; static int y; The static variable x is stored in . Find centralized, trusted content and collaborate around the technologies you use most. I just want others to see both sides too. But (besides the doubtfully preferable possibility of using another keyword): VB.Net static local variables are not thread safeStatic variables are not used very often but they can be very useful when used in the correct way.Variables do have a lifetime.Indicates that the local variable is preserved between calls.A static variable can be thought of as a local variable with memory.A static variable is a local variable whose lifetime is the lifetime of the entire module and not the procedure where it is declared.In fact static variables retain their values as long as the code module is active. I would call it object oriented, instead of procedure driven. You seem to be the one misunderstanding the issue (no offense meant). . 07 Jul. (to be clear, I'm speaking here about const vs. non-const, not static vs. have its internals isolated from callers, so should a method. we can't just create features without any practical applications either, so I see both sides of this. Prefixtablenameswithdefaultschemaname if set, //staticregexdefinedabove. it and the world hasn't ended because of it. The feature was omitted from C# by design. Is it appropriate to ignore emails from a student asking obvious questions? Global variables are automatically initialized at the time of initialization. Static It is poor OO software design. But thisis sloppy because there's this high level variable (possible several of them or maybe a struct or nested class) which is only there to serve one method. The memory model would need a major redesign to allow for their creation and storoage. Sure, none of this is insurmountable, but we tend to go through these minor contortionsas a matter of coursebecause of a language restriction that we all tend to accept. arrogance. It's of type const char [] and refers to an array of size length of string + 1. There's a major problem with local static variableswithin a method. In 'C', static local variables are global variables with a limited scope. @MarkRansom: a) that would depend on the size of the stack, b) how many different things like this I've got. It doesn't take up stack-space may be a benefit if you have something like: Obviously, cost of construction can also be substantial enough that if the function is called a lot, there's good value in only constructing the object once. It is poor OO software design. Are defenders behind an arrow slit attackable? They could be allowed in any .NET language, which must compile to IL, and it would need no re-design whatsoever of the CLR. You need to read the entire thread, especially my first reply. Difference between static and shared libraries? What is the difference between const int*, const int * const, and int const *? Local Static Variables. 36 related questions found. Could a valid C compiler ignore the static? variables are normally stored elsewhere, within the class'type object along with the compiled methods. I see no compelling reason why C# should exclude this feature. ; Local variables (pedantically, variables with block scope) are only accessible within the block of code in which they are declared: When to implement a static local variable as a hidden instance field or a hidden static field? Difference between static class and singleton pattern? And once compiled they can be implemented as the same thing. Static variables are allocated within data segment of the program instead of C stack. Where would these static variables (Just like in C static local variables are global You are asking for global variables. B. How to make voltage plus/minus signs bolder? Example. Assuming the initialization does not use other variables, is there any difference between preserving the value between calls, and setting the same constant value each call? Why do quantum objects slow down when volume increases? There are thread/race issues if 2 threads try to access the static instance overlapping, if the access is the first access (when constructor is run). So there shouldn't be a "major redesign", they are just private members(for instance counts) or static private members (for class counts) that are invisible outside the scope of the method. And if that restriction exists just because people keep asking "why would @Yukon, what do you mean by "registered"? The problem will turn into a murder mystery, a "whodunit.". It's difficult to tell what is being asked here. In this scenario the "static" keyword has different meanings (just like for example "using" currently That is not what the thread is about. If they are local variables, then their value persists when execution leaves their scope. Beides, a private static member cannot be accessed by derived classes anyway. And whatever I do, the initializer list will be part of my code, either way. I do not see howthis offers any advantages over what is currently available. What it does each time is dependent on what it did the last time, so I'd likea couple Booleans andInt32 indexes topreserve state between invocations. Not me, either. That individual made a snide remark of their own. Expressing the frequency response in a more 'compact' form. They could be allowed in any .NET language, which must compile to IL, and it would need no re-design whatsoever of the CLR. If you are concerned about inherited types modifying a private static variable declared at the class level, then declarethe class assealed. This is not the only post the OP made at the time. If you are concerned about inherited types modifying a private static variable declared at the class level, then declarethe class assealed. that already happens with "using" for example; and it's also the case in other languages. The static variable may be internal or external depending on the place of declaration. My opinion is that both private fields and static local variables can be useful. He didn't ask how YOU write code, he asked how to do static locals ", well, here are reasons why we'd want to do that. But I'm not talking about global variables at all. How to declare static local variables in C#? A local variable in a function or static local variable: Visibility is the same as the automatic local variables. Making statements based on opinion; back them up with references or personal experience. Where variables are stored? If you lack the discipline to reference a static variable in your code from only a single location or method, then I do not know what to say. You cannot start moving type objects around in memory to allow them todynamically allocate and deallocate static variables per instance. Hmm, that's helpful. Mark the best replies as answers. If static local variables were allowed, they would be better for this purpose, because they would be hidden to the rest of the class, as they should. the state variables in the method(s) calling this method, passing the data in each time as a reference. The OPasked abouta local static variable, per instance. B. I can just as easily say, "If you lack the discipline to write code that utilizes static locals safely and properly, then I do not know what to say." C# doesn't have a direct substitute, the closest match is adding a static private member to your class. FAQs on Local and Global Variables. Anyway, I rather dislike when people say "why wouldwant to do that?" Hence it should be a static local variable. Edit: This SO answer is very informative too. track calls on just a single instance.". EDIT: Here is an SO question where the answer contains relevant ref to standard: Heap/dynamic vs. static memory allocation for C++ singleton class instance. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. It woulddiscarded when the method completes. Books that explain fundamental chess concepts. Incidentally, global variables can be declared in IL. If it does what you want in the way you want it, then it's all good. Plenty of other OO languages support it and the world hasn't ended because of it. That just leaves your question about memory location. #include <iostream> using namespace std; void increase() { static int num = 0; cout << ++num << endl; } int main() { increase(); increase(); return 0; } Output: 1. I don't see the problem or the need. Should teachers encourage good students to help weaker ones? Difference between static, auto, global and local variable in the context of c and c++. Should I give a brutally honest feedback on course evaluations? Thisthread was a question, not a discussion. In C++, a character in single quotes is a character literal. There should be no reason for their lack of existance. From the standard, section 6.2.4/3 Storage durations of objects: An object whose identifier is declared without the storage-class specifier _Thread_local, and either with external or internal linkage or with the storage-class . Example 2: Static Variable inside a Function. In 'C', static local variables are global variables with a limited scope. For the compilers it's a very small change. Disconnect vertical tab connector from PCB. Would salt mines, lakes or flats be reasonably found in high, snowy elevations? Why are elementwise additions much faster in separate loops than in a combined loop? For help clarifying this question so that it can be reopened, Not the answer you're looking for? Should I give a brutally honest feedback on course evaluations? And in the second place, you do that because that field is, even if private, visible across the whole class, but that The original question asked for a Sure, none of this is insurmountable, but we tend to go through these minor contortionsas a matter of coursebecause of a language restriction that we all tend to accept. (2) the compiler guarantees that static local variable initialization will only be executed once and all subsequent calls to this function will skip re . Well I do. When to implement a static local variable as a hidden instance field or a hidden static field? is correct. The question does not mention any guarantees from the standard. per instance actually serve? an static field, invisible outside the method. Then again, It goes totally against the grain of theway in which managed memory works. I understand exactly what you are talking about and it has nothing In my specific case right now I have a method that gets called numerous times. 1. The problem will turn into a murder mystery, a "whodunit.". A global static variable is one that can only be accessed in the file where it is . with access is the code that you are writing for your own class. Declaring a static variable outside of the scope that tracks how many time a method is called will result in totaling up the method calls for all of the objects of that type, not just the single instance. None. Use instance fields to store the sate of the object. ii. Is it appropriate to ignore emails from a student asking obvious questions? Later replies misunderstood the original issue, including the one that you noted, which also entirelymissed the point of the original question. It ought to be a staticlocalvariable. Moreover, it is generally best to put all the global declarations near the starting of the program, before the 1 st function. I don't see how that's anything like a global variable. The only code I could say you lack the discipline to control your C# doesn't have a direct . It's only the compiler that would have to be aware that static local variables have the same scope as fields, but visibility limited to one method. Were sorry. is correct. have its internals isolated from callers, so should a method. is waste of time. I ask again, what purpose would having a static variable per instance serve? The only code When b is removed from static storage, that memory will remain until the heap is finally torn down. How does that help anything? Static Procedures and Functions. Heap/dynamic vs. static memory allocation for C++ singleton class instance. Prefixtablenameswithdefaultschemaname if set, //staticregexdefinedabove. Connect and share knowledge within a single location that is structured and easy to search. Also, in C++ the auto keyword no longer means automatic storage duration; it now means . A static variable is a local variable whose life time is the lifetime of the entire module, not just the procedure. I don't see how this is any different from a class-level I just came here because I got tired of accepting the limitation and I wanted to see if there was an eleganttechnique to get around it. But that clutters the method signature with "unnecessary" housekeeping, and it needs to be duplicated if calling from somewhere else. Better way to check if an element only exists in one array. That was myoriginal response, and it still is. Connecting three parallel LED strips to the same power supply. The original question asked for a Languages are languages, not paradigms. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. I have actually written code that has LARGE tables in it, because that makes more sense than having code in the program to build the tables. Shraddha. Rather than negating the OPs question, you can just say, "C# doesn't support it, unfortunately" instead of "You should be writing code the way that I write it." Kept in a register, no, that would be invalid by the compiler, each access of a volatile variable must be done exactly as the code describes, can not be skipped or eliminated. Global variable in a module or static global variable: Declared at the top of a program. Improve INSERT-per-second performance of SQLite. For example how many times the method was called ona particularobject.Use static fields to store an item of information that is shared by all objects of the same class. mean that everyone else does. If you wish for other code to be able modify it while your method executes, be my guest trying to debug the code when it does not work. serves no purpose. Static variables are stored in initialised data segments. That's data hiding one step forward. All function calls share the same copy of local static variables. A C style static local variable would not be visible outside the method, and so couldn't be modified, even by members of the same class; but its lifetime would be the same as the instance (if declared in an instance member) or the class (if declared in a What are the differences between a pointer variable and a reference variable? You can initialize it with an initializer or a static constructor. iii. Use an instance variable, which is exactly what you noted below. static var - when the class object disposes, B. Here are some differences between static global and static local variables in the C programming language. But we should ask ourselves if the object is only used within the function or not. I do not see howthis offers any advantages over what is currently available. What purpose would having a localstatic variable,declaredinside of a method, I see no compelling reason why C# should exclude this feature. One of us is misunderstanding the other. Books that explain fundamental chess concepts. Static Code is code, there is no proper or improper. A static variable has local scope, but is also preserved for as long as the program runs. Local, Global , Static Variables (in C) - Types of variables. Eclectic? I ask again, what purpose would having a static variable per instance serve? You can initialize it with an initializer or a static constructor. Static variables have a lifetime that lasts until the end of the program. Difference between static and shared libraries? So a local static variable is really not a local variable at all. There are two separate concepts here: scope, which determines where a name can be accessed, and; storage duration, which determines when a variable is created and destroyed. For example how many times the method was called on any of the class objects. How to declare static local variables in C#? Just as a class should and nowobject instantiation (if we're notusing static methods)in addition to the method invocations. CGAC2022 Day 10: Help Santa sort presents! Static local variables are useful when we want to have only one instance of our object in the local scope, which means all calls to the function will share the same object. All the static variables that do not have an explicit initialization or are initialized to zero are stored in the uninitialized data segment ( also known as the BSS segment). But (besides the doubtfully preferable possibility of using another keyword): Memory Layout of C program. Use an instance variable---no static declaration---to track calls on just a single instance. It's only the compiler that would have to be aware that static local variables have the same scope that fields, but visibility limited to one method.". There should be no reason for their lack of existance. How does legislative oversight work in Switzerland when there is technically no "opposition" in parliament? Here is the syntax of static variables in C language, static datatype variable_name = value; Here, datatype The datatype of variable like int, char, float etc. Could a valid C compiler ignore the static? You cannot start moving type objects around in memory to allow them todynamically allocate and deallocate static variables per instance. The CLR memory model would need a major redesign to allow for their creation and storoage. Just as a class should bool alternator () {. When a local static variable is created, it should be assigned an initial value. If it's, say, a machine generated table of constants for a Times Roman font that I want to have hard-coded in my word-processor, then that wouldn't be a good thing to put on the stack, even if the stack is quite large. variable, but now it has to check if the variable is an instance variable or a static variable, which would slow the CLR down when it accessed instance variables because of the additional check. So I ask again, what purpose wouldhaving static variables per instanceserve? variable_name This is the name of variable given by user. You could always use one of the hallmarks of OOP and encapsulate such a method within its' own class. 'v' is a global variable which is remaining there throughout the program inside the code section and both functions can access it. Do the parentheses after the type name make a difference with new? Each local static variable is initialized before the first time execution passes through the object's definition. But that clutters the method signature with "unnecessary" housekeeping, and it needs to be duplicated if calling from somewhere else. If you wish for other code to be able modify it while your method executes, Question 1: Describe, how can we make a local variable global in the C++ language?. But it should also be local to the function that uses it. I don't see how that's anything like a global variable. So, given that the CLR can support You are asking for global variables. The lifetime of the object in these two cases is different. It goes totally against the grain of theway in which managed memory works. That couldrequire a new .cs code module, a duplicate set of'using' statements, I could also keep In the heap case, you do not want to create a new instance on the heap every time. Use an instance variable, which is exactly what you noted below. and a new one should be started that perhapscontains a link to the old one to provide context for the discussion. Finally, VB allows them, and its C/C++ common practice. Static locals would obviously be useful to at least some people. be my guest trying to debug the code when it does not work. It's only the compiler that would have to be aware that static local variables have the same scope that fields, but visibility limited to one method.". rev2022.12.11.43106. It's a global variable in disguise, that does not disappear at the end of the function in which we declare it, since it isn't stored in the stack. mean that everyone else does. this feature, there is no good reason not to have it. This is an old thread, which has been resurrected completely out of its' original context. However, the static keyword confines it to the scope of its function, like a local variable. Plenty of other object-oriented languages support If you wish for other code to be able modify it while your method executes, So I ask again, what purpose wouldhaving static variables per instanceserve? But, that is not exactly what theOP asked about. Eclectic? Rather than negating the OPs question, you can just say, "C# doesn't support it, unfortunately" instead of "You should be writing code the way that I write it." "I already said this over a year ago, but regarding implementation/storage: a static local variable in an instance method would simply be an instance field, only invisible outside the method; and a static local variable in a static method would simply A local static variable is a variable that can maintain its value from one function call to another and it will exist until the program ends. My opinion is that both private fields and static local variables can be useful. The scope isn't as constrained as it was in 'C' but that shouldn't be a real problem. Is there a difference in the lifetime of the Singleton between A and B? The syntax of the static variables in C is: static datatype variable_name = value; In this case, value It refers to the value that we use to initialize the variable. Static local variables: variables declared as static inside a function are statically allocated while having the same scope as automatic local variables. Static variables in C have the scopes: 1. you want to do that? Are local static variables any different from global static variables? Static variables are generally stored in the program's data segment, whereas anything allocated with new will be stored in the heap. Incidentally, global variables can be declared in IL. static variable per instance. To make all local variables in a procedure or function static, place the static keyword at the beginning of the procedure or function heading (eg Static Sub or Static Function). Butnow you have gone off into something elsethat is completely different, nowwe havestatic methods with local static variables. "Fooling computers since 1971.". If static local variables were allowed, they would be better for this purpose, because they would be hidden to the rest of the class, as they should. Something can be done or not a fit? I do not see howthis offers any advantages over what is currently available. Find centralized, trusted content and collaborate around the technologies you use most. This thread was a question, not a discussion. It would be better to implement the pointer-based approach like this: Now, B::~B() will be invoked (if applicable) and that memory will be correctly removed when b is destroyed, and the lifetime is the same as your first example. The vars of the method are out of scope and elegible for GC, but here's this static method with local vars that are still referenced. It woulddiscarded when the method completes. A field of the I understand exactly what you are talking about and it has nothing A. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. You can use variables a and b inside any function. Other then the location where they are . These variables are used to count the number of times a function is called. What purpose would having a localstatic variable,declaredinside of a method, Bassem.mf makes a good point. in C#. I stumbled across this thread because I was specifically looking for a way to make a variable in method static. A local static variable is a variable, whose lifetime doesn't stop with a function call where it is declared. Also, the compiler can take advantage of that new information and optimize it away in some situations, depending on the specific type you are dealing with. http://rudedog2.spaces.live.com/default.aspx, Javier AP already pointed out that there is no difference in implementation, "And once compiled they can be implemented as the same thing. "Fooling computers since 1971.". The static variables stay alive till the program gets executed in the end. class, even private, is what could be seen and modified while the method is not yet done, and would pose the very problem you mention. Static global variable is always declared outside the main function, while the static local variable is declared inside the main or any block element (for example inside a function, inside a loop etc. If it's not possible, it's not possible, and you can offer alternatives, but insulting someone by claiming they don't have the discipline to do something makes you look like an arrogant dickwad. and a new one should be started that perhapscontains a link to the old one to provide context for the discussion. it and the world hasn't ended because of it. Aside fromthe fact that it goes completely against the grain ofhow the CLR currentlyworks, what purpose would that featureserve? These are local to the block, and their default value is always zero. Do bracers of armor stack with magic armor enhancements and special abilities? The static variables are alive till the execution of the program. (1) the compiler guarantees that. "Declaring a static variable outside of the scope that tracks how many time a method is called will result in totaling up the method calls for all of the objects of that type, not just the single instance. static int numCall = 0; numCall++; This is an old thread, which has been resurrected completely out of its' original context. This is not the only post the OP made at the time. I just edited the question. "Declaring a static variable outside of the scope that tracks how many time a method is called will result in totaling up the method calls for all of the objects of that type, not just the single instance. Thisthread was a question, not a discussion. per instance be stored? Local, Global and Static variable Local variable:-variables that are defined with in a body of function or block.The local variables can be used only in that function or block in which they are declared. Connect and share knowledge within a single location that is structured and easy to search. Why is the eastern United States green if the wind moves from west to east? One of us is misunderstanding the other. "static variables inside functions (local variables that retain their value between calls)". MOSFET is getting very hot at high frequency PWM. At that stage it would be considered "leaked", and the destructor (if any) for B will never be invoked. Not even by a side effect where you give this variable as a pointer to another function. A normal or auto variable is destroyed when a function call where the variable was declared is over. For the compilers it's a very small change. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. The redesign would be required of the compiler. The rubber protection cover does not pass through the hole in the rim. because obviously someone else has found a need that they simply want to do it. That argument is notthe original topic of the thread. That argument is notthe original topic of the thread. Beides, a private static member cannot be accessed by derived classes anyway. Actually in VB, since it calls "static" members "Shared", static locals can be called "Static", which actually existed in VB 6.0: http://msdn.microsoft.com/en-us/library/aa266296(VS.60).aspx. I don't see the problem or the need. Well depending on whether the method it's declared in, is instance or static. So, given that the CLR can support There are tons of features in C# that are not strictly "object-oriented". You would normally use a static variable in cases where you wish to preserve the value of a variable inside a function. with access is the code that you are writing for your own class. this feature, there is no good reason not to have it. What I'm talking about is like a class member, but with even more restricted visibility. and nowobject instantiation (if we're notusing static methods)in addition to the method invocations. And then you browse the members of your class, and the list is clogged by half of them that are state private fields used by one method alone each, that should be static local variables, not appearing in the list of class members. B. I can just as easily say, "If you lack the discipline to write code that utilizes static locals safely and properly, then I do not know what to say." static data_type var_name = var_value; Following are some interesting facts about static variables in C. 1) A static int variable remains in memory while the program is running. This is why old threadsare bestleft alone, In line 4, a and b are declared as two global variables of type int.The variable a will be automatically initialized to 0. But I'm not talking about global variables at all. In my specific case right now I have a method that gets called numerous times. Local Variable in C: The local variable is a variable that is declared within a function, block (within curly braces), or function argument. There does not have to be any code running all the time.Therefore a static variable has the scope of a local variable but the lifetime of a module level variable.Makes a variable persistent even after the procedure has completed.The next execution of the routine can access the previous value.It is the lifetime of a variable that determines its existence, the scope determines its visibility. You make a bolder statement to whoever reads the code later: this won't ever change. 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