C++ 代码
#include<bits/stdc++.h>
#include<stdio.h>
using namespace std;
int main(){
int x, y;
double sum = 0;
scanf("%d%d", &x, &y);
switch(x){
case 1:
sum+= y * 4.00;
break;
case 2:
sum+= y * 4.50;
break;
case 3:
sum+= y * 5.00;
break;
case 4:
sum+= y * 2.00;
break;
case 5:
sum+= y * 1.50;
break;
}
printf("Total: R$ %.2lf", sum);
return 0;
}