Cant compile and run

This is a discussion on Cant compile and run within the C++ Programming forums, part of the General Programming Boards category; Im just learning c++ so ignore my ignorance but when i build up a program and compile it, its ok, ...

  1. #1
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    Cant compile and run

    Im just learning c++ so ignore my ignorance but when i build up a program and compile it, its ok, but when i try to run it, a black box pops up and goes within a split second. This happens with many dos programs i have run. any ideas?

    thx

  2. #2
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    Yeah - check out the FAQ.

    What's happening is the computer does everything you ask it to do, and when it's done, it closes the window your program was running in. The way to solve this is to have the computer wait for input at the end of your program. Look for FAQ entries about having your program wait for input.

  3. #3
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    Thx for the help, i googled "wait for input C++"

    And it told me to enter system("PAUSE"); at the end, worked a treat, thx

  4. #4
    Just Lurking Dave_Sinkula's Avatar
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    Okay, now check the FAQ and know that doing so is not recommended.

    FAQ > How do I... (Level 1) > Stop my Windows Console from disappearing everytime I run my program?
    FAQ > How do I... (Level 1) > How do I get my program to wait for a keypress?
    7. It is easier to write an incorrect program than understand a correct one.
    40. There are two ways to write error-free programs; only the third one works.*

  5. #5
    Rabite SirCrono6's Avatar
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    You should use std::cin.get() instead of system.
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  6. #6
    Frequently Quite Prolix dwks's Avatar
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    Or just run the program from the command prompt . . . or just read Dave's FAQ links (especially the second one).
    dwk

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