Jul 02, 2012 In this tutorial, I'm going to teach you the Get Character Command, which is a very good replacement for the System Pause command. 'Like-Comment-Subscribe' P. Getch is a nonstandard function and is present in conio.h header file which is mostly used by MS-DOS compilers like Turbo C. It is not part of the C standard library or ISO C, Like above functions, it reads also a single character from keyboard.
Gets a character from the console without echo.
Important
This API cannot be used in applications that execute in the Windows Runtime. For more information, see CRT functions not supported in Universal Windows Platform apps.
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Returns the character read. There is no error return.
The _getch and _getwch functions read a single character from the console without echoing the character. None of these functions can be used to read CTRL+C. When reading a function key or an arrow key, each function must be called twice; the first call returns 0 or 0xE0, and the second call returns the actual key code.
These functions lock the calling thread and are therefore thread-safe. For non-locking versions, see _getch_nolock, _getwch_nolock.
By default, this function's global state is scoped to the application. To change this, see Global state in the CRT.
Tchar.h routine | _UNICODE and _MBCS not defined | _MBCS defined | _UNICODE defined |
---|---|---|---|
_gettch | _getch | _getch | _getwch |
Routine | Required header |
---|---|
_getch | <conio.h> |
_getwch | <conio.h> or <wchar.h> |
For more compatibility information, see Compatibility.
Console and Port I/O
_getche, _getwche
_cgets, _cgetws
getc, getwc
_ungetch, _ungetwch, _ungetch_nolock, _ungetwch_nolock
Function getch in C program prompts a user to press a character. It doesn't show up on the screen. Its declaration is in 'conio.h' header file. The function is not a part of standard C library.
int main()
{
printf('Waiting for a character to be pressed from the keyboard to exit.n');
getch();
return0;
}
When you run this program, it exits only when you press a character. Try pressing num lock, shift key, etc. (program will not exit if you press these keys) as these are not characters.
Try running the program by removing getch. In this case, it will exit without waiting for a character hit from the keyboard.
int main()
{
cout <<'Enter a character';
getch();
}
Function getch works in Dev C++ compiler but it doesn't support all functions of 'conio.h' as Turbo C compiler does.
int main()
{
int c;
c =getchar();
putchar(c);
return0;
}
Little snitch kernel extension could not be loaded. A common use of getch is you can view the output (if any) of a program without having to open the output window if you are using Turbo C compiler or if you are not running your program from the command prompt.