compare

#include <stdio.h>

int compare(double * a, double * b, int N, int M){
    int smaller = 0;
    int bigger = 0;
    int equal = 0;

    int i, j;
    for(i=0; i < N; i++)
        for(j=0; j < M; j++)
            if (a[i] > b[j])
                bigger++;
            else if(a[i] < b[j])
                smaller++;
            else
                equal++;

    if (equal != 0) return 0;
    if (smaller == 0 && bigger > 0) return 1;
    if (bigger == 0 && smaller > 0) return -1;

    return 0;
}

int main(){
    double a[]= {5,6,7}, b[] = {2,3};

    int N = sizeof(a)/sizeof(a[0]);
    int M = sizeof(b)/sizeof(b[0]);

    int res = compare(a, b, N, M);
    printf("res = %d", res);

    return 0;
}