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;

    if(price>=100&&price<500)
    {
        cost =price*0.9;
    }
    else if(price>=500&&price<2000)
    {
        cost =price*0.8;
    }
    else if(price>=2000&&price<5000)
    {
        cost =price*0.7;
    }
    else if(price>=5000)
    {
        cost =price*0.6;
    }
    printf("%0.lf",cost);

    return 0;
}