sicsWhat is storage class for variable A in below code?void main() { int A; A = 10; printf("%d", A);}

Understanding Storage Class in C

In C programming, the storage class of a variable determines its visibility (scope), lifetime, and memory location. The storage class for a variable is defined by the keywords used at the time of its declaration.

Breakdown of Code

1. Code Overview:

   • The code provided is a simple C program where an integer variable A is declared and assigned a value of 10.
   • The printf function is then used to print the value of A.

2. Variable Declaration:

   int A;
   

   • Here, A is declared as an integer variable.

Analysis

1. Default Storage Class:

   • In C, when no specific storage class is defined, variables declared inside a function are by default auto (automatic storage class).
   • This means that A is local to the main function and gets created when the function is called and destroyed when the function exits.

2. Scope and Lifetime:

   • The scope of A is limited to the block in which it is defined (in this case, the main function).
   • The lifetime of A is only during the execution of the main function.

Conclusion

The storage class for variable A in the provided code is automatic (or auto). It is local to the function, has a limited scope and lifetime, being valid only during the execution of main.