diff --git a/机房机位预定系统2.cpp b/机房机位预定系统2.cpp
new file mode 100644
index 0000000..e13f173
--- /dev/null
+++ b/机房机位预定系统2.cpp
@@ -0,0 +1,259 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<string.h>
+#define N 20
+#define T (time-8)/2
+int sum[6]={0};
+int computer[6][20]={{1,1,1,1,1,1,0,0,0,0,0,0,1,1,1,1,1,1,1,1},
+{1,1,1,1,1,1,0,0,0,0,0,0,0,0,1,1,1,1,1,1},
+{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
+{1,1,1,1,1,1,0,0,0,0,0,0,1,1,1,0,0,1,1,1},
+{1,1,1,1,1,1,0,0,0,0,0,0,1,1,1,1,1,1,1,0},
+{1,1,1,1,1,1,0,0,0,0,0,0,1,1,1,1,1,1,1,1}};
+void Menu();
+void Situation();
+void Book();
+void Cancel ();
+void SearchWaiting ();
+void detail(int time);
+void prione(int i);
+struct waitlist
+{
+	char number[3];
+	char telephonenumber[11];
+}wait[N];
+void printone(int i);
+int main()
+{
+	Menu();
+}
+void Menu()
+{
+	char a;
+	system ("cls");
+	system ("color f4");
+	printf ("\n\n\n\n\n\n\n");
+	printf ("\t\t\t     ��������λԤ��ϵͳ��\n");
+	printf ("================================================================================\n");
+	printf ("\t\t\t\t**************\n");
+	printf ("\t\t\t\t*1.��ѯijʱ��λ�λ״̬*\n");
+	printf ("\t\t\t\t*2.Ԥ���ջ�λ*\n");
+	printf ("\t\t\t\t*3.ȡ��Ԥ��*\n");
+	printf ("\t\t\t\t*4.��ѯ�ȴ����*\n");
+	printf ("\t\t\t\t*5.�˳�*\n");
+	printf ("\t\t\t\t**************\n");
+	printf ("================================================================================\n");
+	scanf ("%d",&a);
+	system("cls");
+	switch (a)
+	{
+	case 5: break;
+	case 1:
+		{
+			Situation();
+			break;
+		}
+	case 2:
+		{ 
+			Book ();
+			break;
+		}
+	case 3:
+		{
+			Cancel ();
+			break;
+		}
+	case 4:
+		{
+			SearchWaiting ();
+			break;
+		}
+	}
+	getchar();
+}
+void Situation()
+{
+	int time,k;
+	printf("�����8-12����Χ�ڵ�ʱ�䣺");
+	scanf("%d",&time);
+	if(time<8||time>20)
+	{
+		printf("\tʱ���������\n");
+		printf("�����ڣ�8-20)��Χ�ڵ�ʱ��:");
+		scanf("%d",&time);
+	}
+	detail(time);
+	getchar();
+	printf ("��������������˵�");
+	scanf ("%s",&k);
+	Menu(); 
+}
+void Book()
+{
+	int time,i=0,x,y,k;
+	FILE *fp;
+	char c;
+	printf("�ڣ�8-20��ʱ�䷶Χ����������Ҫ��ʱ�䣺");
+	scanf("%d,&time");
+	if(time<8||time>20)
+	{
+		printf("\tʱ���������\n");
+		printf("�����ڣ�8-20)��Χ�ڵ�ʱ��:"); 
+		scanf("%d",&time);
+	}
+	detail(time);
+	if(sum[T]>0)
+	{
+	    if((fp=fopen("waitlist.txt","a"))==NULL)
+		{
+			printf("\n�޷����ļ�!\n");
+			exit(0);
+		}
+		printf("\n\t����������ҪԤ���Ļ��ţ�������������ֻ����룡��\n");
+		scanf("%s %s",wait[i].number,wait[i].telephonenumber);
+		for(i=0;i<i;i++)
+		fwrite(&wait[i],sizeof(struct waitlist),1,fp);
+		fclose(fp);
+	printf("\t�ٴ���������Ҫ��Ԥ����ʱ�䣡\n");
+	scanf("%d",&x);
+	printf("\tԤ���ɹ���\n");
+	getchar();
+	printf ("��������������˵�");
+	scanf ("%s",&k);
+	Menu();	
+}
+else
+{
+	printf("���������ʱ�����δԤ���ĵ��ԣ�\n");
+	for(i=T+1;i<6;i++)
+	{
+		time=9+2*i;
+		detail(time);
+		if(sum[T]>0)
+		printf("\t����Ŀ���ʱ���� %d,%d\n",2*i+8,2*i+10);
+		break;
+	}
+	printf("\t ����ҪԤ����:y/n��");
+	scanf("%s",&c);
+	getchar();
+	if(c=='Y'||c=='y')
+	{
+	    if((fp=fopen("waitlist.txt","r"))==NULL)
+	    {
+	    	printf("\n �޷����ļ���\n");
+	    	exit(1);
+		}
+			else
+			{
+			    printf("waitlist:  number  telephonenumber\n");
+			    for(i=0;!feof(fp);i++)
+			   	{
+			   		fscanf(fp,"%s %s",&wait[i].number,&wait[i].telephonenumber);
+				}
+				fclose(fp);
+			}
+			for(i=0;i<10;i++)
+			{
+				prione(i);
+			}
+		printf("\n\t ����������ҪԤ���Ļ��ţ�����������ĵ绰���룡:\n");
+	    if((fp=fopen("waitlist.txt","a"))==NULL)
+	    {
+			printf("\n �޷����ļ���\n");
+		    exit(0);
+	    }
+	    scanf("%s %s",wait[i].number,wait[i].telephonenumber);
+		for(i=0;i<1;i++)
+		fwrite(&wait[i],sizeof(struct waitlist),1,fp);
+		fclose(fp);
+		printf("���ٴ�������Ե���ţ�\n");
+		scanf("%d",&y);
+		sum[T]--; 
+		computer[T][y]=1;
+		printf("\t ���ˣ���ȴ����ǵĵ绰��\n");
+		printf ("��������������˵�");
+	    scanf ("%s",&k);
+		Menu();		
+	}
+	else Menu();
+}
+}
+void Cancel()
+{
+	int time,number,k;
+	printf("�ڣ�8-20��ʱ�䷶Χ���������Ѿ�Ԥ����ʱ�䣺");
+	scanf("%d",&time);
+	if(time<8||time>20)
+	{
+		printf("\t ����ʱ�����\n");
+		printf("�ڣ�8-20��ʱ�䷶Χ���������Ѿ�Ԥ����ʱ�䣺");
+	    scanf("%d",&time);
+	}
+	else
+	{
+		printf("\t ������Ԥ���Ļ��� ��");
+		scanf("%d",&number);
+	}
+	detail(time);
+	printf("\tȡ���ɹ���\n");
+	getchar();
+	printf ("��������������˵�");
+	scanf ("%s",&k);
+	Menu();
+}
+void SearchWaiting()
+{
+	int time,i,k;
+	FILE *fp;
+	printf("\t�ڣ�8-20��֮����������Ҫ��Ѱ��ʱ��:");
+	scanf("%d",&time);
+	if(time<8||time>20)
+	{
+		printf("\tʱ���������!\n");
+		printf("\t�ڣ�8-20��֮����������Ҫ��Ѱ��ʱ��:");
+	    scanf("%d",&time);
+	}
+	else
+	if((fp=fopen("waitlist.txt","r"))==NULL)
+	{
+		printf("\nCannot open file!\n");
+		exit(0);
+	}
+	else
+	{
+		printf("waitlist:  number  telephonenumber\n");
+		for(i=0;feof(fp);i++)
+		{
+			fscanf(fp,"%s %s",&wait[i].number,&wait[i].telephonenumber);
+		}
+		 fclose(fp);
+	}
+	for(i=0;i<10;i++)
+	{
+		prione(i);
+	}
+	printf ("��������������˵�");
+	scanf ("%s",&k);
+	Menu();
+}
+void detail(int time)
+{
+	int i,j=0,k,s=0;
+	int v[30];
+	for(i=0;i<20;i++)
+	{
+		if(computer[T][i]==0)
+		{
+			s++;
+			v[j++]=i;
+		}
+	}
+	sum[T]=s;
+	printf("\t���õĵ�����:%d\n",sum[T]);
+	for(k=0;k<j;k++)
+	printf("\t���õĵ�����:%d\n",v[k]);
+}
+void prione(int i)
+{
+	printf("\t\t%s%s \n",wait[i].number,wait[i].telephonenumber);
+}