Answer Posted / veda

example of global variable----

#include<stdio.h>

int a; /***global variable*********/

void main()
{
int s;
printf("\n enter the value of a--");
scanf("%d",&a);
s=a+3;
printf("\n s=%d",a);

mul(); /****another function********/

getch();


void mul()
{
int m;

m=a*2;

printf("\n m=%d",a);
}


output---
enter the value of a----5

s=8

m=10


when u r compaing this program in lnux we get a waring
because in linux default type is integer so in calling
function we r giving void so internally compailer treate as
a int so,
here type declaration is impartent

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