水果价格计算器：苹果、梨、桔子、芒果单价查询及付款金额计算

#include <stdio.h>

int main() { int fruitCode, weight; float price;

printf("请输入水果编号(1-4)：");
scanf("%d", &fruitCode);

printf("请输入重量(单位：公斤)：");
scanf("%d", &weight);

switch(fruitCode) {
    case 1:
        price = 2.0;
        break;
    case 2:
        price = 2.5;
        break;
    case 3:
        price = 3.0;
        break;
    case 4:
        price = 4.5;
        break;
    default:
        printf("输入有误，请重新输入。\n");
        return 0;
}

printf("应付款：%.2f元\n", price * weight);

return 0;

}