Question

基本上我用c ++设置了我的双打，由于某种原因它给了我这个错误

“.. \ project2_name.cpp：56：9：错误：赋值函数'double total（double，double，double）'”。

double appleprice=0;
double pearprice=0;
double tomatoprice=0;
double completetotal=0;


double total(double appleprice, double pearprice, double tomatoprice)
{
    total = appleprice + pearprice + tomatoprice;
        return total;
}

我有一个开关盒，可以从一个除了总数之外的菜单中调用它：案例'3'： COUT＆LT;＆LT; “你添加了一个番茄”＆lt;＆lt; ENDL; 番茄= productsadd（番茄）; 价格= 3.02; tomatoprice = addprice（price）; cout＆lt;＆lt; “你有订单”＆lt;＆lt;番茄＆lt;＆lt; “西红柿。” ＆LT;＆LT; ENDL; 打破;

    case '4':
        cout<< "Your Full order" << endl;
        completetotal = total(appleprice, pearprice, tomatoprice);
        cout << "You have on order " << apple << " apples. " << appleprice << " price."<< endl;
        cout << "You have on order " << pear << " pears. " << pearprice << " price."<< endl;
        cout << "You have on order " << tomato << " tomatos. " << tomatoprice << " price."<< endl;
        cout << "You have a total of " << completetotal << endl;
        break;

Answer 1

由于total是函数的名称 - 您不能使用它。使用临时变量或者可能将代码更改为

double total(double appleprice, double pearprice, double tomatoprice)
{
    return appleprice + pearprice + tomatoprice;
}

如何在c ++函数中添加双精度？

1 个答案: