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#include <stdio.h>
#include <stdlib.h>
int main()
{
double total_price = 0.0;
int type = 0;
int quantity = 0;
const double type1_price = 3.50;
const double type2_price = 5.50;
printf("输入版本(1 或 2):");
scanf("%d", &type);
printf("输入大小:");
scanf("%d", &quantity);
total_price =
quantity * (type1_price +
(type - 1) * (type2_price - type1_price));
printf("The price for %d of type %d is $%.2f\n", quantity, type,
total_price);
getchar();
system("pause");
return 0;
}

return 0;放到最后
上代码