#include <stdio.h>
#include <math.h>

double pythagoras(doublemin x, double y);

int a[] = {3, 3, 1, -1, -1, 1, -3, 0, 6};
int b[] = {4, -4, 1, 1, -1, -1, 0, 4 ,9};

int main(void) {
    double d;
    for(int i= 0 ; i<sizeof(a) / sizeof(int) ; i++) {
        d = pythagoras(a[i], b[i]);
        printf("%3d, %3d, %9.5f\n", a[i], b[i], d);
        }
    printf("%3d, %3d, %9.5f\n", 5, 12, pythagoras(5,12));
    return 0;
    }

double pythagoras(double x, double y) {
    sqrt(pow(x, 2) + pow(y, 2));
}