Code for Example 7 of using function in C Programming
#include <stdio.h>
void f1(int *k) // B
{
*k = *k + 10; // C
}
main ( )
{
int i;
i = 0;
printf ("The value of i before call %d \n", i);
f1 (&i); // A
printf ("The value of i after call %d \n", i);
}