C++ currency output

Question

I am taking a C++ course right now and have completed my final assignment. However there is one thing that is bugging me:

Though I have the correct outputs for the testing on a particular output, the basepay should be 133.20 and it is displaying as 133.2. Is there a way to have this display the extra 0 rather than leaving it off?

Anyone know if it's possible and how to do it? Thank you in advance

My code is below:

cout<< "Base Pay .................. = " << basepay << endl;
cout<< "Hours in Overtime ......... = " << overtime_hours << endl;
cout<< "Overtime Pay Amount........ = " << overtime_extra << endl;
cout<< "Total Pay ................. = " << iIndividualSalary << endl;
cout<< endl;

cout<< "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" <<endl;
cout<< "%%%% EMPLOYEE SUMMARY DATA%%%%%%%%%%%%%%%%%%%%%%%" <<endl;
cout<< "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" <<endl;
cout<< "%%%% Total Employee Salaries ..... = " << iTotal_salaries <<endl;
cout<< "%%%% Total Employee Hours ........ = " << iTotal_hours <<endl;
cout<< "%%%% Total Overtime Hours......... = " << iTotal_OvertimeHours <<endl;
cout<< "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" << endl;
cout<< "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" << endl;

-1: The code should be a minimal working example. Most of the pasted code is irrelevant to the question. Could you please edit your question to reduce it? — thiton, Mar 10 '13 at 21:18
Did the edit for you. Sorry I am still new to this and was unsure what part of the code was needed to help with my problem. Thanks! — Jack, Mar 10 '13 at 22:11
Thanks. If unsure, you can orient on the phrase "short, self contained, correct example" as defined on http://sscce.org/. — thiton, Mar 10 '13 at 23:32

score 12 · Answer 1 · answered Mar 11 '13 at 11:07

If you want to do it in a C++ way, and you can compile with C++11 flags, you can use the standard library:

// Note: the value in cents!
const int basepay = 10000;

// Create a stream and imbue it with the local configuration.
std::stringstream ss;
ss.imbue(std::locale(""));

// The stream contains $100.00 (assuming a en_US locale config)
ss << std::showbase << std::put_money(basepay);

Example here.

What advantages have this approach?

It uses the local configuration, so the output will be coherent in any machine, even for the decimal separator, thousand separator, money symbol and decimal precission (if needed).
All the format effort is already done by the std library, less work to do!

Yes, the [cppreference.com docs](https://en.cppreference.com/w/cpp/io/manip/put_money) insist on this. I have seen MSVC show currency formatting with just `cout << fixed << showpoint << setprecision` if locale is set, but I believe this here solution is best for cross-platform. — Spencer Williams, May 13 '23 at 02:28

score 5 · Accepted Answer · answered Mar 10 '13 at 21:18

5

use cout.precision to set precision, and fixed to toggle fixed-point mode:

cout.precision(2);
cout<< "Base Pay .................. = " << fixed << basepay << endl;

answered Mar 10 '13 at 21:18

Mike Dinescu

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3

May be worth mentioning that `fixed` is `std::fixed` from `` rather than something magical. – us2012 Mar 10 '13 at 21:19
Thank you! This worked great! Gave yours the answer check because you included the std::fixed so I knew how to add it! I appreciate the help! – Jack Mar 10 '13 at 21:37
Is there a way to use this only once so that it doesnt set the precision for the other values? – Jack Mar 10 '13 at 22:08

score 5 · Answer 3 · answered Mar 10 '13 at 21:20

Yes, this is possible to do using stream manipulators. For example, set output to fixed floating-point notation, define precision (2 in your case) and define the fill character to '0':

#include <iostream>
#include <iomanip>

int main()
{
    double px = 133.20;
    std::cout << "Price: "
              << std::fixed << std::setprecision(2) << std::setfill('0')
              << px << std::endl;
}

In case you prefer a C-style formatting, here is an example of using printf() to achieve the same:

#include <cstdio>

int main()
{
    double px = 133.20;
    std::printf("Price: %.02f\n", px);
}

Hope it helps. Good Luck!

Tom · Answer 4 · 2013-03-10T21:36:59.057

1

You can change the cout properties:

cout.setf(ios::fixed);
cout.precision(2);`

now cout << 133.2; will print 133.20

edited Mar 10 '13 at 21:36

answered Mar 10 '13 at 21:19

Tom

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score 1 · Answer 5 · answered Mar 10 '13 at 21:19

1

Check this out:

int main()
{
    double a = 133.2;

    cout << fixed << setprecision(2) << a << endl;
}

Output

133.20

answered Mar 10 '13 at 21:19

masoud

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score 1 · Answer 6 · edited Jun 13 '17 at 22:45

1

You need to take a look at precision and fixed.

#include <iostream>

int main()
{
    double f = 133.20;

    // default
    std::cout << f << std::endl;

    // precision and fixed-point specified
    std::cout.precision(2);
    std::cout << std::fixed << f << std::endl;

    return 0;
}

edited Jun 13 '17 at 22:45

Blake

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answered Mar 10 '13 at 21:23

Zach Riggle

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C++ currency output

6 Answers6

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