C语言实现猜数字游戏：实战教程与时间挑战

#include "time.h"
#include "stdlib.h"
#include "stdio.h"
#include "conio.h"
main() 
{ char c; clock_t start,end;
  time_t a,b; double var;
  int i,guess; srand(time(NULL));
  printf("do you want to play it.('y' or 'n') \n");
  loop: while((c=getchar())=='y') 
  { i=rand()%100; printf("\npleaseinput number you guess:\n"); 
    start=clock(); 
    a=time(NULL);
    scanf("%d",&guess); while(guess!=i) 
    { if(guess>i) 
      { printf("please input a little smaller.\n"); 
        scanf("%d",&guess); }
      else 
      { printf("please input a little bigger.\n"); 
        scanf("%d",&guess); 
      }
    }
  end=clock(); 
  b=time(NULL); 
  printf("\1: It took you %6.3f seconds\n",var=(double)(end-start)/18.2);
  printf("\1: it took you %6.3f seconds\n\n",difftime(b,a)); 
  if(var<15) printf("\1\1 You are very clever! \1\1\n\n"); 
  else if(var<25) printf("\1\1 you are normal! \1\1\n\n"); 
  else printf("\1\1 you are stupid! \1\1\n\n");
  printf("\1\1 Congradulations \1\1\n\n");