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;
    double cost = 0.0;
    // write your code here.......
    if(price>=5000){
        cost = price * 0.6;
    }else if(price>=2000){
        cost = price * 0.7;
    }else if(price>=500){
        cost = price * 0.8;
    }else if(price>=100){
        cost = price * 0.9;
    }
    printf("%.1f\n",cost);
    return 0;
}