1 #include <stdio.h>

     2 #include <stdlib.h>

     3 

     4 #define getrandom(max) (1+(int)((float)(max)*rand()/RAND_MAX+1.0))

     5 

     6 int main (void)

     7 {

     8     while (1) {

     9         int guess = -1, value = getrandom (100), count = 0;

    10         do {

    11             printf ("Enter a number: ");

    12             if (scanf ("%d", &guess) < 0)

    13                 (void)getchar ();

    14             else

    15                 count++;

    16             if (guess != value)

    17                 printf ("X is %s than %d\n", (value > guess) ? "higher" : "lower", guess);

    18         } while (value != guess);

    19         printf ("SUCCESS: You got it after %d attempts\n", count);

    20     }

    21     return EXIT_SUCCESS;

    22 }