153. Call by address function.

 #include<stdio.h>

void value(int *);

int num;

void main()

{

        printf("Enter a value : ");

        scanf("%d",&num);

        printf(" Before : %d\n",num);

        value(&num);

        printf(" After : %d\n",num);

}

void value(int *p)

{

        *p=10;

}