题解 | 计算商品打折结算金额

#include <iostream>
#include <iomanip>
using namespace std;

int main() {
    
    double price;
    cin >> price;

    // write your code here.......
    float q=price>5000?0.6:(price>=2000?0.7:(price>=500?0.8:(price>=100?0.9:1)));

    cout << setiosflags(ios::fixed) << setprecision(1) << price*q << endl;

    return 0;
}