kbhit()                  Check Keyboard Input Buffer for Character Waiting
 
 #include   <conio.h>
 
 int        kbhit(void);
 
    kbhit() checks to see if a key has been recently pressed.  If it has,
    the character is waiting in the input buffer and can be read using
    getch() or getche().
 
    Returns:    Non-zero if a key has been pressed; otherwise 0.
 
      Notes:    If getch() or getche() is called to read a key, without
                first calling kbhit() to see if a character is waiting in
                the buffer, the program may pause until a key is pressed.
 
  -------------------------------- Example ---------------------------------
 
    The following statements check to see if a key has been pressed
    before reading a character from the console.
 
        #include <conio.h>
 
        int keypress, ch;
 
        main()
        {
            keypress = kbhit();
            if (keypress != 0)
               ch = getche();
        }

Seealso:


 getch() 
 getche()