神奇的c/c++小游戏（(提高你的编程兴趣)

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#include<stdio.h>
#include<time.h>
#include<stdlib.h>
#include<conio.h>
#include<windows.h>   //下面Sleep()函数的头文件
#include<mmsystem.h>

void menu()
{
	printf("   *****************************n");
	printf("   *****************************n");
	printf("   ************1.play***********n");
	printf("   ************0.exit***********n");
	printf("   **********2.chakan***********n");
	printf("   *********3.qingkong**********n");
	printf("   *****************************n");
	printf("请选择：          n");
}

void game()
 {
 	system("cls");
 	system ( "color 33" ); //设置颜色
 	FILE *fp;
 	if((fp=fopen("D:\caishuziyou.txt","a+"))==NULL)
    {
        printf("open file errorn");
        return ;
    }
 	int rand_num=rand()%100;
 	int tmp=0,t=0;

 	while(1)
 	{
 		int flag=0;
 		printf("请输入你要猜的数字：");
		 scanf("%d",&tmp);
		 if(tmp>rand_num)
		 {
		 	printf("猜大了！n");
			flag=0;
	}
		 if(tmp<rand_num)
		 {
		 	printf("猜小了！n");
			flag=0;
	}
		 if(tmp==rand_num)
		 {
		 	printf("正确！恭喜！n");
			 printf("共用了%d次n",t+1);


		 FILE *fp;
fp=fopen("D:\caishuziyou.txt","w");
if(fp==NULL)
{
	printf("create file failedn");
	return ;
}
fprintf(fp,"%d",t+1);
fclose(fp);
		 break;
		}
		if(flag==0) t++;

		printf(" 你再猜：n");
	 }
	printf("n按任意键返回目录");
	getch();

 }

void menu2()
{
    system("cls");
    system ( "color B6" ); //设置颜色
    printf("即将登陆系统！！！n");
    getch();
    for(int t=3;t>=1;t--)
	{
	    system("cls");
		printf("%d",t);
		Sleep(700);
		system("cls");
	}
}

void chakan()
{
 	system("cls");
 	system ( "color E0" ); //设置颜色

int t=0;
FILE*fp;
if((fp=fopen("D:\caishuziyou.txt","r"))==NULL)
{
	printf("can not to open the file!n");
	exit(0);
}
while(fscanf(fp,"%d",&t)!=EOF)//若不到文件结尾则继续
{
	printf("此玩家共进行了%d次n",t);
}
		printf("n按任意键返回目录");
		getch();
}

void qk()//清空
{
    FILE *fp;
    system("cls");                        //清屏函数,不管下面是否保存数据，每次输入新数据是屏幕上只能有此次的数据
    system ( "color C0" ); //设置颜色
	if((fp=fopen("D:\caishuziyou.txt","w"))==NULL)
    {
        printf("open file errorn");
        return;
    }
    fclose(fp);
    printf("n按任意键返回！");
    getch();
}

int main()
{
 	int input=0;
 	srand((unsigned)time(NULL));
	do{
//while(1)
//{
	system("cls");
	 	menu();
 //	printf("请选择：");
 		scanf("%d",&input);
 		switch(input)
 		{
 			case 1:
               menu2();
 				game();
 				break;
 			case 2:
			 	chakan();
				 break;
            case 3:
                qk();
                break;
 			case 0:
 				exit(0);
 				break;
 			default:printf("输入错误！请重新输入！");
		 }
//}
	 	}while(input);
	return 0;
}