题解 | #网购#

#include<stdio.h>
int main()
{
    float originalPrice=0.0;
    int month=0;
    int date=0;
    int coupon=0;
    double discountedPrice=0.0;
    scanf("%f %d %d %d",&originalPrice,&month,&date,&coupon);
    if(month==11&&date==11)
    {
        if(coupon==1)
        discountedPrice=originalPrice*0.7-50;
        else
        discountedPrice=originalPrice*0.7;
    }
    else if(month==12&&date==12)
    {
        if(coupon==1)
        discountedPrice=originalPrice*0.8-50;
        else
        discountedPrice=originalPrice*0.8;
    }
    if(discountedPrice>0)
    printf("%.2f",discountedPrice);
    else
    printf("0.00");
    return 0;
}