C語言實現，猜數字智力小游戲

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main()
{
 printf("   歡迎使用猜數字游戲！ \n");
 printf("\n");
 printf("************************\n");
 printf("\n");
 printf("******** 1-<start ******\n");
 printf("******** 0-<exit *******\n");
 printf("\n");
 printf("************************\n");
 int input = 1;
 while (input)
 {
  printf("請選擇->:");
  scanf("%d", &input);
  switch (input)
  {
   case 1:
   {
      int n;
      int m;
      srand((unsigned int)time(NULL));
      n = rand() % 101;
      while (1)
      {
       printf("請輸入一個0-100之間的數:");
       scanf("%d", &m);
       if (m > n)
       {
        printf("你猜大了！\n");
       }
       else if (m < n)
       {
        printf("你猜小了！\n");
       }
       else 
        
       {
        printf("你猜對了！\n");
        break;
       }
      }
   }
   default:
   {
    printf("游戲退出！\n");
    break;
   }
       
   
  }
 }
 system("pause");
 return 0;
}