Question

我正在编写一个c ++程序，它接受用户输入汽车类型，租用天数和里程数，根据常量值计算变量并生成报告。我用if语句编写代码来查看carType，＆＃34; f＆＃34;或＆＃34; c＆＃34;由用户输入并从该输入执行计算。然而输出需要显示车辆的名称，福特或雪佛兰，而不是输入的＆＃34; f＆＃34;或＆＃34; c＆＃34;。

我在尝试接受信件并将其等同于品牌时遇到错误。此外，我正在为用户输入的每个条目获取标题，如何获取5个条目并将其输出到一个标题下？

这是我的代码：

#include <iostream>
#include <string>
#include <sstream>
#include <iomanip>
#include <cmath>

using namespace std;

int main()
{
    // Change the console's background color.
    system ("color F0");

    // Declare the variables.
    char carType, brand;
    string f("Ford"), c("Chevrolet");
    int counter = 0, cars = 0;
    double days, miles, cost_Day, cost_Miles, day_Total;

    cout << "Enter the number of cars you wish to enter: ";
    cin >> cars;
    cin.ignore();

    while (counter <= cars)
    {

        cout << "Enter the car type (F or C): ";
        cin >> carType;
        cin.ignore();
        cout << "Enter the number of days rented: ";
        cin >> days;
        cin.ignore();
        cout << "Enter the number of miles driven: ";
        cin >> miles;
        cin.ignore();


        if (carType == 'F' || carType == 'f')
        {
            cost_Day = days * 40;
            cost_Miles = miles * .35;
            day_Total = cost_Miles + cost_Day;
            brand = f;
        }
        else
        {
            cost_Day = days * 35;
            cost_Miles = miles * .29;
            day_Total = cost_Miles + cost_Day;
            brand = c;
        }

        cout << "\nCar          Days          Miles          Rental Cost\n";
        cout << left << setw(13) << brand << left << setw(13) << days << left << setw(13) << miles 
        << fixed << setprecision(2) << showpoint << "$" << setw(13) << right << day_Total << "\n\n";
        counter++;
    }


        system ("pause");
}

提前致谢！

Answer 1

brand的类型为char，但您为其指定了字符串。 brand需要是一个字符串。

我还建议养成更好的命名惯例的习惯：c和f不是好选择。还要考虑可扩展性：如果你添加丰田，马自达，法拉利等怎么办？

尝试调用字符串变量时出错

1 个答案: