猜一个1到100之间的数字

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main() {//
   int answer, guess, random(int, int);

   printf(Guess a number from 1 to 100.\n);

   srand(time (0));
   answer = random(1, 100);

   printf(Your guess? );
   scanf(%d, &guess);
   while (guess != answer && guess != 0) {
      if (guess < answer) 
         printf(Too low\n);
      else 
         printf(Too high\n);
      printf(Your guess? );
      scanf(%d, &guess);
   }
   if (guess == 0) 
      printf(Sorry, answer is %d\n, answer);
   else 
      printf(Congratulations, you've got it!\n);
}

int random(int m, int n) {
   int offset = rand() / (RAND_MAX + 1.0) * (n - m + 1);
   return m + offset;
}