PAT A1065 A+B and C (64bit) (20 分)

AC代码

#include <cstdio>

int main() {
    #ifdef ONLINE_JUDGE
    #else
        freopen("1.txt", "r", stdin);
    #endif // ONLINE_JUDGE
    char str[2][10] = {"false", "true"};
    int n, tcase = 1;
    scanf("%d", &n);
    for(int i = 0; i < n; i++) {
		int flag = 0;
        long long a, b, c;
        scanf("%lld%lld%lld", &a, &b, &c);
        long long d = a + b;
        //printf("%lld %lld %lld %lld\n", a, b, c, d);
        /*if(c - b >= a) {
			flag = 0;
			printf("flag:%d\n", flag);
		} else {
			flag = 1;
			printf("flag:%d\n", flag);
		}*/
		if(a > 0 && b > 0  && d < 0) flag = 1;
		else if(a < 0 && b < 0 && d >= 0) flag = 0;
		else if(d > c) flag = 1;
		else flag = 0;
        printf("Case #%d: %s\n", tcase++, str[flag]);
    }
    return 0;
}