使用函数计算员工的净工资 - C++

Question

以下是我目前所拥有的。我似乎无法弄清楚我做错了什么。我认为我拥有的输入验证功能也不正确。原来的问题是：

编写一个程序来计算员工的净工资。程序应提示用户输入工作小时数和小时工资。员工支付其工资总额的 17.5% 作为社会保障缴款。所有员工按其总工资缴纳 20% 的税。工资总额低于 2500 的员工，按其工资总额缴纳 10% 的税。您的程序应使用以下功能；

一个。 computeGross ：此函数根据工作小时数和小时工资计算总工资。计算出来的工资总额返回给主函数。

b. computeDeductions：此函数接受总工资作为输入，计算社会保障和税收减免，并将总减免返回给主函数

c。 computeNet：该函数接受总工资、扣除额作为输入，并打印出总工资、总扣除额和净工资。

d。 validateHours：此函数用于输入验证。它确定用户提供的小时数是否有效。一个支付周期内的工作小时数不能超过 150 小时，并且不能为负数。

e。 validateWage：此函数用于输入验证。它确定用户提供的小时工资是否有效。时薪不能超过200，不能为负数。

#include <iostream>
#include <iomanip>
using namespace std;

// Declare Functions
double computeGross(double hoursWorked, double hourlyWage);
double computeDeductions(double grossPay);
double computeNet(double grossPay, double deductions);
void validateHours(double hoursWorked);
void validateWage(double hourlyWage);

int main()
{
    // Declare Variables
    double hoursWorked = 0;
    double hourlyWage = 0;
    double grossPay = 0;
    double deductions = 0;
    double netSalary = 0;

// Get the hours worked and hourly wage
cout << "Please enter the amount of hours worked (HH.MM): " << endl;
cin >> hoursWorked;
cout << "Please enter in your hourly wage: $" << endl;
cin >> hourlyWage;

// Output the results
cout << fixed << setprecision(2)
     << "The net salary is: $" << netSalary << endl;

    return 0;
}

// compteGross() function - get gross salary based on hours worked and hourly wage.
double computeGross(double grossPay, double hoursWorked, double hourlyWage)
{
return grossPay = hoursWorked * hourlyWage;
}

// computeDeductions() function - gets salary and calculates deductions
double computeDeductions(double deductions, double grossPay)
{

    if(grossPay < 2500)
    {
    deductions = (grossPay * .10) * .175;
    }
    else
    {
    deductions = (grossPay * .20) * .175;
    }

return deductions;

}

// computeNet() function - prints out gross salary,total deductions and net    salary
double computeNet(double netSalary, double grossPay, double deductions)
{
netSalary = grossPay - deductions;

cout << "The gross salary is: $" << grossPay << endl;
cout << "The total deductions are: $" << deductions << endl;
cout << "The net salary is: $" << netSalary << endl;
return netSalary;
}

// validateHours() function - input validation; hours worked can;t exceed 150  or be neg.
void validateHours(double hoursWorked)
{
    if(hoursWorked < 0 || hoursWorked > 150)
    {
        cout << "Error! Hours can't be negative or exceed 150\n";
    }
}

// validateWage() - Input validation; wage can't exceed 200 or be   negative
void validateWage(double hourlyWage)
{
    if(hourlyWage < 0 || hourlyWage > 200)
    {
    cout << "Error! Wage can't be negative or exceed 200\n";
    }
}

Answer 1

首先，您必须在主函数中实际调用您的函数，以便它们执行任何操作。

例如：

    int main(){
    // Declare Variables
    double hoursWorked = 0;
    double hourlyWage = 0;
    double grossPay = 0;
    double deductions = 0;
    double netSalary = 0;

    // Get the hours worked and hourly wage
    cout << "Please enter the amount of hours worked (HH.MM): " << endl;
    cin >> hoursWorked;
    cout << "Please enter in your hourly wage: $" << endl;
    cin >> hourlyWage;

    //you have to actually call your functions lol:

    validateHours (hoursWorked);

    validateWage(hourlyWage);

    grossPay = computeGross(grossPay, hoursWorked, hourlyWage);

    deductions = computeDeductions(grossPay);

    netSalary = computeNet(netSalary,grossPay, deductions );

    // Output the results
    cout << fixed << setprecision(2)
    << "The net salary is: $" << netSalary << endl;

    return 0;
}

此外，当您在 main 函数之前声明函数时，您必须确保在稍后实际创建函数体时它们具有相同数量的参数。

例如： 你在一开始就定义了这个：

double computeNet(double grossPay, double deductions);

然后你在制作函数体时会有这个：

double computeNet(double netSalary, double grossPay, double deductions)

您也不应该在 imo 中使用用户定义的函数，但您应该可以接受这项任务。你了解参考变量了吗？看起来您尝试做的一些事情可以从中受益。

编辑：我想我修好了：

#include <iostream>
#include <iomanip>
using namespace std;

// Declare Functions
double computeGross( double hoursWorked, double hourlyWage);
double computeDeductions(double grossPay);
double computeNet( double grossPay, double deductions);
void validateHours(double hoursWorked);
void validateWage(double hourlyWage);

int main()
{
    // Declare Variables
    double hoursWorked = 0;
    double hourlyWage = 0;
    double grossPay = 0;
    double deductions = 0;
    double netSalary = 0;

    // Get the hours worked and hourly wage
    cout << "Please enter the amount of hours worked (HH.MM): " << endl;
    cin >> hoursWorked;
    cout << "Please enter in your hourly wage: $" << endl;
    cin >> hourlyWage;

    //you have to actually call your functions lol:

    validateHours (hoursWorked);

    validateWage(hourlyWage);

    grossPay = computeGross(hoursWorked, hourlyWage);

    deductions = computeDeductions(grossPay);

    netSalary = computeNet(grossPay, deductions );

    // Output the results
    cout << fixed << setprecision(2)
    << "The net salary is: $" << netSalary << endl;

    return 0;
}

// compteGross() function - get gross salary based on hours worked and hourly wage.
double computeGross(double hoursWorked, double hourlyWage)
{
    return hoursWorked * hourlyWage;
}

// computeDeductions() function - gets salary and calculates deductions
double computeDeductions(double grossPay)
{
    double deductions;
    if(grossPay < 2500)
    {
        deductions = (grossPay * .10) * .175;
    }
    else
    {
        deductions = (grossPay * .20) * .175;
    }

    return deductions;

}

// computeNet() function - prints out gross salary,total deductions and net    salary
double computeNet(double grossPay, double deductions)
{
    double netSalary;
    netSalary = grossPay - deductions;

    cout << "The gross salary is: $" << grossPay << endl;
    cout << "The total deductions are: $" << deductions << endl;
    cout << "The net salary is: $" << netSalary << endl;
    return netSalary;
}

// validateHours() function - input validation; hours worked can;t exceed 150  or be neg.
void validateHours(double hoursWorked)
{
    if(hoursWorked < 0 || hoursWorked > 150)
    {
        cout << "Error! Hours can't be negative or exceed 150\n";
    }
}

// validateWage() - Input validation; wage can't exceed 200 or be   negative
void validateWage(double hourlyWage)
{
    if(hourlyWage < 0 || hourlyWage > 200)
    {
        cout << "Error! Wage can't be negative or exceed 200\n";
    }
}

Answer 2

您从未真正调用过您的任何函数。在收到用户的最终输入后​​，您应该开始调用函数来计算结果，然后它应该可以工作了。

它只打印出 0 的原因是因为您将 netSalary 设置为 0，然后从未将变量操作为任何其他值。