#include <stdio.h>

int sum(int m, int n) {
    return m + n;
}

int abs(int x) {
    if (x < 0) {
        x = -x;
    }
    return x;
}

int func(int x, int y) {
    return sum(abs(x), abs(y));
}

int main(void) {
    int l, n = -2, m = 3;
    l = func(m, n);
    printf("%dの絶対値と%dの絶対値の和は%d\n", m, n, l);
    return 0;
}