#include <stdio.h>

int walk(int w1, int w2);
int swim(int s);
int fly(int f);

int main(void)
{
    int ma = 4, mb = 30, mc = 2000;
    mc += walk(ma + 6, mb + 7);
    printf("mc has a value of %d\n", mc);
    return 0;
}

int walk(int w1, int w2)
{
    int a, b;
    b = swim(w2);
    a = fly(w1);
    return -b + a;
}

int swim(int s)
{
    int c;
    c = s % 8;

    // point one
    return c;
}

int fly(int f)
{
    int d;
    d = f * 12;

    // point two

    return d;
}