getch() function from conio.h library implementation on Windows

getch.c

#include <windows.h>
TCHAR getch(){
    DWORD mode, cc;
    HANDLE h = GetStdHandle( STD_INPUT_HANDLE );
    if (h == NULL)
        return 0; // console not found
    GetConsoleMode( h, &mode );
    SetConsoleMode( h, mode & ~(ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT) );
    TCHAR c = 0;
    ReadConsole( h, &c, 1, &cc, NULL );
    SetConsoleMode( h, mode );
    return c;
}