Static In C Language | Scope Of Static Variable In C Language | Static IN C Language In Hindi

Static In C Language

Static is a keyword used in C programming language. It can be used with both variables and functions, i.e., we can declare a static variable and static function as well.

 An ordinary variable is limited to the scope in which it is defined, while the scope of the static variable is throughout the program.

Fig: Static In C Language 

Static keyword can be used in the following situations:

o    Static global variable

When a global variable is declared with a static keyword, then it is known as a static global variable. It is declared at the top of the program, and its visibility is throughout the program.

o    Static function

When a function is declared with a static keyword known as a static function. Its lifetime is throughout the program.

o    Static local variable

When a local variable is declared with a static keyword, then it is known as a static local variable. The memory of a static local variable is valid throughout the program, but the scope of visibility of a variable is the same as the automatic local variables.

o    Static member variables

When the member variables are declared with a static keyword in a class, then it is known as static member variables. They can be accessed by all the instances of a class, not with a specific instance.

o    Static method

The member function of a class declared with a static

keyword is known as a static method. It is accessible by all

the instances of a class, not with a specific instance.

Example:

   #include <stdio.h>  

    int main()   

   {  

    printf("%d",func());    

    printf("\n%d",func());  

     return 0;  

     }  

    int func()  

    {   

    int count=0; // variable initialization  

    count++; // incrementing counter variable  

       

    return count; } 

    output:

    1

    1

Static variable

A static variable is a variable that persists its value across the various function calls.

Syntax

    static data_type variable_name;

    Program of Static variable

    #include <stdio.h>  

    int main()  

    {  

   printf("%d",func());  

   printf("\n%d",func());  

     

    return 0;  

    }  

    int func()  

    {  

    static int count=0;  

    count++;  

    return count;  

     }  

   

     Output:

   1

   2