백준 1002번 C99

1002번 문제

백준 1002번 정답

#include <stdio.h>
#include <math.h>
#include <stdlib.h>
 
float Distance(int x1, int y1, int x2, int y2) {
    float d = sqrt((pow((x1 - x2), 2) + pow((y1 - y2), 2)));
    return d;
}
 
void D_comparison(int x1, int y1, int r1, int x2, int y2, int r2) {
    float d = Distance(x1, y1, x2, y2);
    if (((r1 + r2) > d) && (abs(r1 - r2) < d)) {
        printf("2 \n");
    }
    else if (((r1 + r2) == d) || (abs(r1 - r2) == d)) {
        if (d == 0) {
            printf("-1\n");
        }
        else {
            printf("1 \n");
        }
    }
    else {
        printf("0 \n");
    }
}
 
 
int main() {
    int T;
    int x1, x2, y1, y2, r1, r2;
    int i = 0;
 
    scanf("%d", &T);
 
    while (i < T) {
        scanf("%d %d %d %d %d %d", &x1, &y1, &r1, &x2, &y2, &r2);
        D_comparison(x1, y1, r1, x2, y2, r2);
        i++;
    }
 
    return 0;
}