题解 | 网购
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https://www.nowcoder.com/practice/5d7dfd405e5f4e4fbfdff6862c46b751
#include <stdio.h>
int main() {
float price;
int month;
int date;
int a;
scanf("%f %d %d %d",&price,&month,&date,&a);
if(month == 11 && date == 11 ){
if(a == 1){
if(price * 7.0 / 10.0 >= 50.0){
printf("%.2f",price * 7.0 / 10.0 - 50.0);
}else{
printf("0.00");
}
}else if(a == 0){
printf("%.2f",price* 7.0 / 10.0);
}
}else if(month == 12 && date == 12){
if(a == 1){
if(price * 8.0 / 10.0 >= 50.0){
printf("%.2f",price * 8.0 / 10.0 - 50.0);
}else{
printf("0.00");
}
}else if(a == 0){
printf("%.2f",price * 8.0 / 10.0);
}
}else{
printf("%.2f",price);
}
return 0;
}
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