pr08001.cpp

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////////////////////////////////////////
// File Name: pr08001.cpp
////////////////////////////////////////
#include <iostream>
#include <iomanip>

// Define a set of macros.
#define OVERTIME      1.5
#define TAXRATE       0.15
#define WKWEEK        40
#define REG(h)        ((h) < WKWEEK ? (h) : WKWEEK)
#define OTIME(h)      ((h) < WKWEEK ? 0 : h - WKWEEK)
#define OTIMEPAY(h,r) ((r) * OTIME(h) * OVERTIME)
#define REGPAY(h,r)   ((r) * REG(h))
#define GROSSPAY(h,r) (OTIMEPAY(h,r) + REGPAY(h,r))
#define WHOLDING(h,r) (GROSSPAY(h,r) * TAXRATE)
#define NETPAY(h,r)   (GROSSPAY(h,r) - WHOLDING(h,r))

// A function prototype.
void setformat();

////////////////////////////////////////
// The main() function.
////////////////////////////////////////
int main()
{
    std::cout << "Enter hours (xx) rate (x.xx): ";
    int hours;
    float rate;
    std::cin >> hours >> rate;

    std::cout << "Regular:    ";
    setformat();
    std::cout << REGPAY(hours, rate)   << std::endl;

    std::cout << "Overtime:   ";
    setformat();
    std::cout << OTIMEPAY(hours, rate) << std::endl;

    std::cout << "Gross:      ";
    setformat();
    std::cout << GROSSPAY(hours, rate) << std::endl;

    std::cout << "Witholding: ";
    setformat();
    std::cout << WHOLDING(hours, rate) << std::endl;

    std::cout << "Net Pay:    ";
    setformat();
    std::cout << NETPAY(hours, rate)   << std::endl;

    return 0;
}

////////////////////////////////////////
// Set the text output format.
////////////////////////////////////////
void setformat()
{
    std::cout << std::setw(10)
              << std::setiosflags(std::ios::fixed) 
              << std::setiosflags(std::ios::right)
              << std::setprecision(2);
}