C語(yǔ)言實(shí)現(xiàn)的猜數(shù)字小游戲

#include <stdio.h>
#include<stdlib.h>
#include<time.h>
//rand為產(chǎn)生隨機(jī)數(shù)的函數(shù)
void game()
{
 srand((unsigned)time(NULL));
 int key = (int)rand() % 100;    //產(chǎn)生一個(gè)1---100之間的數(shù)
 int ret = 0;
 while (1)
 {
 printf("請(qǐng)輸入你猜的數(shù)字（1--100）：");
 scanf("%d", &ret);
 if (ret < key)
  printf("猜小了\n");
 if (ret>key)
  printf("猜大了\n");
 if (ret == key)
 {
  printf("恭喜你猜中了！\n");
  break;
 }
 }
}
void menu()
{
 printf("\n");
 printf("*************************************\n");
 printf("******* 【 猜數(shù)字小游戲】 *********\n");
 printf("****               ****\n");
 printf("****  1.play      0.exit  ****\n");
 printf("*************************************\n");
 
}
int main()
{
 while (1)
 {
  menu();     //菜單函數(shù)
  int i = 0;
  printf("請(qǐng)選擇：");
  scanf("%d", &i);
  switch (i)
  {
  case 1:
  game();
  break;
  case 0:
  exit(0);
  break;
  default:
  break;
  }
 }
 system("pause");
 return 0;
}