题解 | #实现四舍五入#

#include <iostream>
using namespace std;

int main() {
    double d = 0.0;
    int res = 0;

    cin >> d;

    if (d > 0) {
        res = (int)(d + 0.5);
    } else {
        res = (int)(d - 0.5);
    }

    cout << res << endl;
}