#include <stdio.h>

void peasoup(int *green);

void main()
{
    int turn;
    int *head;

    turn=13;
    head = &turn;

    peasoup(head);

    printf("Oh, no, it's %i!\n",*head);
}

void peasoup(int *green)
{
    while((*green)--)
        puts("Blech!");

    *green = 13 * 51 + 3;
}