#include <stdio.h>
#include <conio.h>

int notmain()
{
    char c='N'; //N is assigned to c

    for(;;) //infinite loop
    {
        printf("%c\t",c); //N is printed over and over
        if(_kbhit()) //until a key is hit, the keyvalue is stored in the buffer
        {
            c=_getch(); //c is fed the value from the buffer. The program does not pause here
            printf("%c",c); //print the key
            break; //break the loop
        }
    }
    _getch(); //yes, the program does pause here.
    return 0;
}

int main()
{
   /* Display message until key is pressed. */
   while( !_kbhit() )
      _cputs( "Hit me!! " );

   /* Use _getch to throw key away. */
   printf( "\nKey struck was '%c'\n", _getch() );
}