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| Zolaboony (1) |
May 19, 2008 at 5:30am |
| Hi, i am new to C++ and have just written my "Hello World" program. It worked all right but the console/cmd closes down instantly. If you tell me why it is closing down it would be very helpful. |
| Duoas (1617) |
May 19, 2008 at 5:40am |
It is because your IDE is too stupid to know that a console application run from the IDE should have an automatic pause at the end.
Add the following to the end of your main() function to fix it:
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...
std::cout << "Press ENTER to continue...";
std::cin.ignore( std::numeric_limits<std::streamsize>::max(), '\n' );
return 0;
}
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You'll need to #include <limits>
Enjoy. |
| ropez (312) |
May 25, 2008 at 1:44pm |
First I would search for the setting in my IDE that says "Keep console window open after program terminates".
If I didn't find it, I'd send a request for it to be included in the next version.
In the meantime: All the suggestions so far assumes that the program reach the end of main. Neither of you considered exceptions, or something like this in main:
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if (somethingFailed())
return SOME_ERROR_CODE;
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I suggest creating this small tool:
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class KeepRunning {
public:
~KeepRunning() {
// Whatever code you prefer to keep the program running, e.g.
system("pause"); // "Press enter"
sleep(5); // Wait 5 seconds
}
};
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In your main function:
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int main() {
KeepRunning kr;
// code
} // Program stops here
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This way the program must keep the console open, even if it doesn't reach the end of main.
BTW: Of course, remember to remove this code before the program is "released". |
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