题解 | #计算商品打折结算金额#

#include <stdio.h>

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