Simple2Code

Global Variable in C

Written by

admin

in

Global variables in C are declared outside any functions and usually at the top of the program as shown below. They can be used in the program inside any block of code.

Properties of a Global Variable:

  • Global variables are defined outside a function, usually on top of the program.
  • The lifetime of a Global Variable is throughout the program and can be accessed to any function or block.

Example: C Program for Local Variable

#include <stdio.h>

//Global Variable
int a = 20;

void funGlobal()
{
  /*local variable with
    same name on different block*/
  int a = 50;
  printf("%d : Inside funGlobal Function\n", a);
}

int main()
{
  printf("%d : Inside main\n", a);

 //caling the function
  funGlobal();
}

The Output of Global Variable in C.

20 : Inside main
50 : Inside funGlobal Function

More posts