题解 | 计算商品打折结算金额

#include <stdio.h>

int main() {
    float n;
    scanf("%f",&n);
    if(n>=5000){n=n*0.6;}
    else if(n>=2000){n=n*0.7;}
    else if(n>=500){n=n*0.8;}
    else if(n>=100){n=n*0.9;}
    printf("%.1f",n);
    return 0;
}