How to convert weekly pay to monthly

[Jdawg32]

Hello all,
I am trying to convert my weekly gross pay to a monthly pay in C++. I have everything in place but I need the code to put in to make week 4 turn to monthly pay. This is my code:

#include <iostream>
#include <iomanip>
const double over = 1.5;

int main()
{
    using namespace std;
    double hours = 0, hwage = 0, gpay = 0, mpay = 0, total = 0;
    int week = 0;
    char repeat = 'q';

    cout << "CalcPay" << endl;

    do {
        week++;
        cout << "Week " << week << endl;
    cout << "Please enter the number of hours worked in a week or q to quit: ";
    cin >> hours;
    cin >> repeat;
    cout << "Please enter the hourly wage: ";
    cin >> hwage;

    if (hours <= 40)
        gpay = hours * hwage;
    else
        gpay = (40 * hwage) + ((hours - 40) * hwage * over);

    cout << fixed;
    cout << std::setprecision(2); // two numbers after the decimal point
    cout << "Your weekly gross pay is: " << gpay << "\n";

    mpay = gpay * 4, week % 4 == 0;
    cout << "Your total monthly pay is: " << week << endl;
    total += gpay;
    cout << "Your total pay for the year so far is: " << total << endl;
    }
    while(week <= 52);

    return 0;
}

As you can see my code is a little lack luster but it will get the job done. Where I am having trouble is, I don't want the mpay to be there i just want to take out the whole line
mpay = gpay * 4, week % 4 == 0;
cout << "Your total monthly pay is: " << week << endl;
and just have it show up in week 4. I know I'm on the right track but I need a little bit of help with the code. Any help would be greatly appreciated. Thank you and have a great night.

[JLBorges]

#include <iostream>
#include <iomanip>

int main() {

    const double over = 1.5;

    std::cout << "CalcPay" << '\n';

    double hwage = 0, mpay = 0, total = 0;

    // may be do this just once instead of once every week? (if not move it inside the loop)
    std::cout << "Please enter the hourly wage: ";
    std::cin >> hwage;

    // we need to do this only once
    std::cout << std::fixed << std::setprecision(2); // two numbers after the decimal point

    for( int week = 1 ; week < 53 ; ++week ) { // for each week from 1 to 52

        std::cout << "Week " << week << '\n';

        std::cout << "Please enter the number of hours worked in a week or q to quit: ";

        // read in the next character
        char c ;
        std::cin >> c ;
        if( c == 'q' || c == 'Q' ) break ; // we are done if the user entered 'q'
        else std::cin.putback(c) ; // otherwise, put the extracted character back into the stream

        double hours ;
        std::cin >> hours ;

        double gpay = hours * hwage;

        // add overtime if applicable
        if ( hours > 40 ) gpay += (hours-40) * hwage * (over-1) ;

        std::cout << "Your weekly gross pay is: " << gpay << "\n";

        if( week%4 == 0 ) { // end of the month

            std::cout << "Your total monthly pay is: " << mpay << '\n';
            total += mpay ;
            std::cout << "Your total pay for the year so far is: " << total << '\n';
            mpay = 0 ;
        }
        else mpay += gpay ;
    }
}

[rjphares]

What does putback do?

[JLBorges]

> Puts the character ch back to the input stream so the next extracted character will be ch.

Puts a character back to the input stream so the next extracted character will be that one.
For an input-only stream (like std::cin), the character that is put back must be the last one that was extracted.
http://en.cppreference.com/w/cpp/io/basic_istream/putback

Another (perhaps better) option here would be to use unget() http://en.cppreference.com/w/cpp/io/basic_istream/unget