system1/switch函数对应试题输入，保存试题到文件和退出系统选项以及管理员密码.c

case 3:system("cls");//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
            char code1[50]={"jiehe"},check1[50];//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD> 
			printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD>룺");
			for(j=1;j<=3;j++)
			{
			scanf("%s",check1);
			getchar();
			system("cls");			
			if(!strcmp(code1,check1))
			{
			printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȷ\n");
			Sleep(t);
			system("cls");
			judge=1;
			break;
			}
			else
			{
			printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>%d<>λ<EFBFBD><CEBB><EFBFBD>\n",m);
				m--;
			if(m==1&&!strcmp(code1,check1)) 
			{
			printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȷ\n");
			Sleep(t);
			system("cls");
			judge=1;
			break;
			}
			if(m==0&&!strcmp(code1,check1)) 
			{
			printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȷ\n");
			Sleep(t);
			system("cls");
			judge=1;
			break;
			}
			else
			judge=2;
		 	}
 			} 
 			m=2;
 			if(judge==1)
 			{
 			InputTitle(N);
 			}
 			system("cls");
			if(judge==2)
		    	{
 				while (p>0)
  				{
  				printf("\n\n\n\n\n\n\n\n\n\n");
		    	printf("\t\t\t<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǷǷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>룡\n");
		    	printf("\t\t\t<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ؿ<EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD>棡\n");
		    	printf("\t\t\t<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>룡\n");
    			printf("\t\t\tʱ<EFBFBD>仹ʣ%d<><64>",p);
    			Sleep(1000);
    			system("cls");
   				p--;     
  				} 
  				}
  				p=5;
 			system("cls");
            break;
		case 4:system("cls");//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>⵽<EFBFBD>ļ<EFBFBD> 
		    char c;
		    if(SaveNode(N))
			printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD>!\n");
			else printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD><EFBFBD>!\n");
			printf("\n");
			printf("<EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
			scanf("%c",&c);
			if(c=='\n')
			{
				system("cls");
			}
			break;
		case 5:system("cls");//<2F>˳<EFBFBD><CBB3><EFBFBD><EFBFBD><EFBFBD>ϵͳ 
			printf("<EFBFBD>㽫<EFBFBD>˳<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD>Y or N?)\n");
			scanf("%c",&flag);
			getchar();
			if(flag=='Y'||flag=='y')
			exit(0);
			system("cls");
			break;
		default:system("cls"); 
			printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD><EFBFBD>ѡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>\n");
			Sleep(t);
			system("cls"); 
	}
	} 
}