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The last statement in the function returns 0 to the operating system.
return 0;
Returning 0 from main() is a way to indicate that the program ended without a problem. The operating system doesn’t have to do anything with the return value. In general, you can simply return 0 like I did here.
When you run the Game Over program, you might only see a console window appear and disappear just as quickly. That’s because Cþþ is so fast that it opens a console window, displays Game Over!, and closes the window all in a split second. However, in Windows, you can create a batch file that runs your console program and pauses, keeping the console window open so you can see the results of your program. Since the compiled program is named game_over.exe, you can simply create a batch file comprised of the two lines
game_over.exe pause
To create a batch file:
1. Open a text editor like Notepad (not Word or WordPad).
2. Type your text.
3. Save the file with a .bat extension, such as game_over.bat.
Finally, run the batch file by double-clicking its icon. You should see the results of the program since the batch file keeps the console window open.
