Question

我在C ++中有一个类赋值，它基本上希望我使用一个struct以及一个或两个数组来允许客户从早餐菜单中查看和选择项目。每当我去运行程序时，它只是说退出时返回值为0.我已经尝试过现场检查，我无法弄清楚出了什么问题。我怀疑我可能没有正确加载文本文件中的数据，因此没有结果，因为没有加载数据。

这是我的代码：

    //Student Name:  Jacob Gillespie

    //Date:  10/18/13

    //Program:  Breakfast Billing System

    //Summary:  Program allows customer to select different items from a menu and sums up 

their total

//Headers
#include <iostream>
#include <fstream>
#include <string>

using namespace std;

//Define structs

struct menuItemType
{
    string menuItem;
    double menuPrice;
};

//Declare variables and arrays

ifstream inData;

const double tax = 0.05;

int itemSelected[8];

menuItemType menuList[8];


//Provide function prototypes

void getData(ifstream& inFile);
void showMenu();

void printCheck();

void customerSelection();




//Main Program Execution

int main()
{
    //Initialize itemSelected to 0

for (int counter = 0; counter < 8; counter++)
    itemSelected[counter] = 0;

    //Open input file
inData.open("menu.txt");

        //Execute functions
void getData(ifstream& inData); 
void showMenu();
void customerSelection();
void printCheck();



inData.close();
return 0;
}

//Function Definitions

    //getData
void getData(ifstream& inFile)
{
    for (int counter = 0; counter < 8; counter++)
    {
        inData >> menuList[counter].menuItem
           >> menuList[counter].menuPrice;
    }
}

    //showMenu
void showMenu()
{
    for (int counter = 0; counter < 8; counter++)
    cout << menuList[counter].menuItem << " " << menuList[counter].menuPrice << endl;
}

    //printCheck
void printCheck()
{
    double total = 0;
    double addedTax = 0;

    for (int counter = 0; counter < 8; counter++)
        if (itemSelected[counter] = 1)
    {
        cout << menuList[counter].menuItem << " " << menuList[counter].menuPrice << endl;
        total = total + menuList[counter].menuPrice;
    }

addedTax = total * tax;

cout << "Tax " << addedTax << endl;
cout << "Amount Due " << total << endl;

}

    //customerSelection
void customerSelection()
{
string choice;

for (int counter = 0; counter < 8; counter++)
    {
        cout << "If you would like to order the item, " << menuList[counter].menuItem << ", please enter 'yes'. "
        << endl << "If not, please enter 'no'." << endl;
        if (choice == "yes")
            itemSelected[counter] = 1;
    }
}

Answer 1

在您拥有

的所有函数调用之前的void s是不必要的

//Execute functions

可能在输入文本文件中的数据时遇到问题

1 个答案: