用函数调试练习 C++ 程序 Visual Studio 2015

Question

我的 C++ 教科书让我写一个程序来计算欠税。我这样做了，但是当程序执行时，我只看到 "Are you married? True/False" 行，一旦我输入文本，就会再输出几行，程序立即结束。它应该再问用户几个问题并将输入存储在变量中，然后再进行操作，但程序在它有机会这样做之前就退出了。错误在哪里？太感谢了。

    // ch7progExercise5.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>

using namespace std;

void getData(bool& marriedVal, int& childVal, int& salaryVal, double& pensionVal);
double taxAmount(bool marriedVal, int childVal, int salaryVal, double pensionVal);

bool married;
int children, grossSalary;
double pensionPercent;

int main()
{
    getData(married, children, grossSalary, pensionPercent);
    taxAmount(married, children, grossSalary, pensionPercent);
    return 0;
}

void getData(bool& marriedVal, int& childVal, int& salaryVal, double& pensionVal)
{
    cout << "Are you married? True/False" << endl;
    cin >> marriedVal;
    if(marriedVal)
    {
        cout << "How many children under the age of 14 do you have?" << endl;
        cin >> childVal;
    }
    cout << "What is your gross salary? If married, provide combined income." << endl;
    cin >> salaryVal;
    cout << "What percentage of your gorss income did you contribute to a pension fund?" << endl;
    cin >> pensionVal;
}

double taxAmount(bool marriedVal, int childVal, int salaryVal, double pensionVal)
{
    double standardExemption, pension, taxRate, tax, taxableIncome;
    int numPeople, personalExemption;
    if (marriedVal)
    {
        standardExemption = 7000;
        numPeople = 2;
    }
    else
    {
        standardExemption = 4000;
        numPeople = 1;
    }
    numPeople += childVal;
    personalExemption = 1500 * numPeople;
    pension = pensionVal*salaryVal;
    taxableIncome = salaryVal - (standardExemption + pension + personalExemption);
    if (taxableIncome < 15000)
    {
        taxRate = 0.15;
        tax = taxRate*taxableIncome;
    }
    else if (taxableIncome < 40000)
    {
        taxRate = 0.25;
        tax = 2250 + taxRate*(taxableIncome - 15000);
    }
    else if (taxableIncome > 40000)
    {
        taxRate = 0.35;
        tax = 8460 + taxRate*(taxableIncome - 40000);
    }
    else
        cout << "Invalid income" << endl;
    cout << tax << endl;
    return tax;
}

Answer 1

不要使用 true，使用 1。执行时 cout << "Are you married? True/False" << endl; 在命令提示符中，确保将 1 而不是 true 作为响应。这将解决您的问题。

用函数调试练习 C++ 程序 Visual Studio 2015

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