当我编译为什么时，我的代码返回0？

Question

int onedudetotal;
int total;
int cust;
int price;
int day;

double calculate(int avgcust, int avgprice, int days)
{
    onedudetotal = (avgprice * days) * avgcust;
    return onedudetotal;
};

int main()
{   
    cout << "Please enter days, average customers and days" << endl;
    cin >> cust; price; day;
    cout << calculate(cust, day, price) << endl;
}

在编译期间，我的代码在输入日期成本和价格时返回0。当输入5,120和50时它应该返回30000.可能是什么问题？

Answer 1

你有：

cin >> cust; price; day;     // reads 'cust' from user input
                             // evaluates price, day as expressions
                             // which do nothing

你的意思是：

cin >> cust >> price >> day;