C語言實現益智小游戲1

include <stdio.h>
#include <stdlib.h>
#include <time.h>
void print_menu()
{
 printf("**********************\n");
 printf("******* 1.start ******\n");
 printf("******* 0. exit ******\n");
 printf("**********************\n");
}
int main()
{
 int input = 1;
 printf("歡迎使用猜數字游戲\n");
  
 while (input)
 {
  print_menu();
  printf("請選擇>");
  scanf("%d", &input);
  switch (input)
  {
  case 1:
  {
   int n = 0;
   int ch = 0;
   srand((unsigned int)time(NULL));
   n = rand() % 101;
   while (1)
   {
    printf("請猜一個（0-100）直接的數\n");
    scanf("%d", &ch);
    if (ch > n)
    {
     printf("你猜大了\n");
    }
    else if (ch <n)
    {
     printf("你猜小了\n");
    }
    else
    {
     printf("恭喜你，猜對了\n");
     break;
    }
   }
   break;
  }
  default:
   printf("游戲退出\n");
   break;
  }
 }
 system("pause");
 return 0;
}