C/C++负数除法和负数取模

这几道题目的运行结果是多少

#include <bits/stdc++.h>
using namespace std;
int main() {
    cout << "1: " << 7 / 4 << endl;
    cout << "2: " << (-7) / 4 << endl;
    cout << "3: " << 7 / (-4) << endl;
    cout << "4: " << (-7) / (-4) << endl;
    cout << "5: " << 7 % 4 << endl;
    cout << "6: " << (-7) % 4 << endl;
    cout << "7: " << 7 % (-4) << endl;
    cout << "8: " << (-7) % (-4) << endl;
    return 0;
} 

正确答案是

总结下来就是：

1.除法向零取整

2.取模运算按照余数=被除数-商×除数计算。也可记为，取模运算结果的符号，取决于被模数的符号，与模数的符号无关。

转载自https://blog.csdn.net/eastlhu/article/details/51536331