Function            getyn - get Yes/No

  Syntax              char getyn(int output);

  Prototype in        keyboard.h

  Remarks             getyn waits for a Y or N to be pressed and then
                      displays a message via putstr() according to
                      output:

                           output         Message displayed
                           ------         -----------------
                             0                 no message
                             1                 Y or N
                             2                 Yes or No

                      getyn is case independent.

                      Video output is via Borland's console i/o.

  Return value        returns 'Y' or 'N'

  See also            getc_match(), getk(), getc_match(), getlogical(),
                      inkey(), inkeyc()

  Example             #include <keyboard.h>

                      main()
                      {
                           printf("Is this OK? ");
                           getyn(2);
                      }