diff --git a/未命名1.c b/未命名1.c
index 7ee1068..f8a8a4b 100644
--- a/未命名1.c
+++ b/未命名1.c
@@ -33,12 +33,67 @@ void menu()
 	printf("\t\t|\t g.�˳�ϵͳ                           |\n");
 	printf("\t\t|---------------------------------------------|\n"); 
  } 
-int iCount;
+ void Rank()
+ {
+ 	FILE *fp;
+ 	void R_Save(struct student *phead); 
+ 	fp=fopen("D:\\ѧ����Ϣ.txt","r");
+	struct student *phead1=NULL;
+	struct student *pEnd1,*pNew1,*pNow1; 
+	pNew1=(struct student*)malloc(sizeof(struct student));
+	 fscanf(fp,"%s",pNew1->id);
+	 fscanf(fp,"%s",pNew1->name);
+	 fscanf(fp,"%s",pNew1->sex);
+	 fscanf(fp,"%d",&pNew1->age);
+	 fscanf(fp,"%s",pNew1->note);
+	 pNew1->next=NULL;
+	 pEnd1=pNew1;
+	 phead1=pNew1;
+	while(!feof(fp))
+	{
+	 pNew1=(struct student*)malloc(sizeof(struct student));
+	 fscanf(fp,"%s",pNew1->id);
+	 fscanf(fp,"%s",pNew1->name);
+	 fscanf(fp,"%s",pNew1->sex);
+	 fscanf(fp,"%d",&pNew1->age);
+	 fscanf(fp,"%s",pNew1->note);
+	 pNew1->next=NULL;
+	 pEnd1->next=pNew1;
+	 pEnd1=pNew1;
+	}
+	pNow1 = phead1;
+	while(pNow1->next->next!=NULL)
+	{
+		pNow1 = pNow1->next;
+	}
+	pNow1->next=NULL;
+	fclose(fp);
+ 	struct student *i,*j,pTemp;
+ 	if(phead1 == NULL)
+        return;
+    for(i = phead1; i->next!=NULL;i = i->next)
+    {
+        for(j = phead1; j->next!=NULL; j = j->next)
+        {
+            if(strcmp(j->id , j->next->id)>0)
+            {
+                
+                strcpy(pTemp.id,j->id); strcpy(j->id,j->next->id); strcpy(j->next->id,pTemp.id);
+                strcpy(pTemp.name,j->name); strcpy(j->name,j->next->name); strcpy(j->next->name,pTemp.name);
+                strcpy(pTemp.sex,j->sex); strcpy(j->sex,j->next->sex); strcpy(j->next->sex,pTemp.sex);
+                strcpy(pTemp.note,j->note); strcpy(j->note,j->next->note); strcpy(j->next->note,pTemp.note);
+                pTemp.age=j->age; j->age=j->next->age; j->next->age=pTemp.age;
+            }
+        }
+    }
+    R_Save(phead1);
+  } 
+  
 struct student* Create()
 {
+	/*void Save(struct student *phead);*/
 	struct student* phead=NULL;
 	struct student *pEnd,*pNew;
-	iCount=0;
 	pNew=(struct student*)malloc(sizeof(struct student));
 	printf("\t\t\t######������ѧ��������Ϣ######\n");
 	printf("\t\t\tѧ�ţ�"); scanf("%s",pNew->id);
@@ -81,7 +136,9 @@ struct student* Create()
 			fprintf(fp,"%s ",pTemp->note);
 			pTemp=pTemp->next;
 		}
-	}		fclose(fp);
+	}
+	system("pause");
+	fclose(fp);
 }
 		
 void Print()
@@ -99,7 +156,7 @@ void Print()
 		printf("������%s\n",a[1]);
 		printf("�Ա�%s\n",a[2]);
 		printf("���䣻%d\n",b);
-		printf("��ע��%s\n",a[3]);
+		printf("��ע��%s\n\n",a[3]);
 		fscanf(fp,"%s%s%s%d%s",a[0],a[1],a[2],&b,a[3]);
 	}
 	fclose(fp);	
@@ -111,7 +168,35 @@ void Save(struct student *phead)
 	struct student *pTemp;
 	pTemp=phead;
 	FILE *fp;
-	if((fp=fopen("D:\\ѧ����Ϣ.txt","w"))!=NULL)
+	if(pTemp!=NULL)
+	{
+		if((fp=fopen("D:\\ѧ����Ϣ.txt","w"))!=NULL)
+	{
+		while(pTemp!=NULL)
+		{
+			fprintf(fp,"%s ",pTemp->id);
+			fprintf(fp,"%s ",pTemp->name);
+			fprintf(fp,"%s ",pTemp->sex);
+			fprintf(fp,"%d ",pTemp->age);
+			fprintf(fp,"%s ",pTemp->note);
+			pTemp=pTemp->next;
+		}
+		fclose(fp);
+	}
+		else 
+		printf("�ļ���ʧ��\n");
+	} 
+	 Rank();
+	 system("pause");
+}
+void R_Save(struct student *phead)
+{
+	struct student *pTemp;
+	pTemp=phead;
+	FILE *fp;
+	if(pTemp!=NULL)
+	{
+		if((fp=fopen("D:\\ѧ����Ϣ.txt","w"))!=NULL)
 	{
 		while(pTemp!=NULL)
 		{
@@ -123,14 +208,14 @@ void Save(struct student *phead)
 			pTemp=pTemp->next;
 		}
 		fclose(fp);
-		return;
 	}
-	else 
-	printf("�ļ���ʧ��"); 
+		else 
+		printf("�ļ���ʧ��\n");
+	} 
 }
 struct student* Delete()
 {
-	char s[20]; int i=1;
+	char s[20]; 
 	struct student *pTemp,*pre; 
 	FILE *fp;
 	fp=fopen("D:\\ѧ����Ϣ.txt","r");
@@ -163,16 +248,16 @@ struct student* Delete()
 		pNow = pNow->next;
 	}
 	pNow->next=NULL;
-	pre=pTemp=phead;
 	printf("\t\t\t������ѧ�ţ�");
-	renew: scanf("%s",s);
+renew:	pre=pTemp=phead; int i=1;
+	scanf("%s",s);
 	while(strcmp(pTemp->id,s))
 	{
 		i++;
 		pTemp=pTemp->next;
 		if(pTemp==NULL)
 		{
-			printf("\t\t\tѧ���������󣡣���");
+			printf("\t\t\tѧ���������󣡣���\n");
 			printf("\t\t\t���������룺"); 
 		    goto renew; 
 		}
@@ -234,29 +319,29 @@ void search()
 	}
 	pNow->next=NULL; 
 	fclose(fp);
-	int x;  char s[20];
+	char x;  char s[20];
 	printf("\t\t\t��ѡ���ѯ��ʽ\n1.ѧ�Ų�ѯ\n2.������ѯ\n3.�Ա��ѯ\n4.�����ѯ\n");
-RE:	scanf("%d",&x);
+RE:	x=getch();
 	fflush(stdin);   //��ջ����� 
-	pTemp=phead;  int Y=0;
+RE1:	pTemp=phead;  int Y=0; int flag = 1;
 	switch(x)
 	{
-		case 1:
+		case'1':
 			printf("\t\t\t������ѧ�ţ�");
 			break;
-		case 2:
+		case'2':
 			printf("\t\t\t������������");
 			break; 
-		case 3:
+		case'3':
 			printf("\t\t\t�������Ա�");
 			break;
-		case 4:
+		case'4':
 			printf("\t\t\t���������䣺");
 			scanf("%d",&Y);
 			goto jump;
 			break;
 		default:
-			printf("\t\t\t��������\n\t\t\t������ѡ��");
+			printf("\t\t\t��������\n\t\t\t������ѡ��\n");
 			goto RE; 
 	}
 	scanf("%s",s);
@@ -264,7 +349,7 @@ jump:	while(pTemp!=NULL)
 	{
 		switch(x)
 	{
-		case 1: 
+		case'1': 
 		if(strcmp(s,pTemp->id)==0)
 		{
 			printf("ѧ�ţ�%s\n",pTemp->id);
@@ -272,8 +357,10 @@ jump:	while(pTemp!=NULL)
 			printf("�Ա�%s\n",pTemp->sex);
 			printf("���䣻%d\n",pTemp->age);
 			printf("��ע��%s\n",pTemp->note);
-		}  break;
-		case 2:
+			flag = 0;
+		} 
+		 break;
+		case'2':
 			if(strcmp(s,pTemp->name)==0)
 			{
 			printf("ѧ�ţ�%s\n",pTemp->id);
@@ -281,8 +368,10 @@ jump:	while(pTemp!=NULL)
 			printf("�Ա�%s\n",pTemp->sex);
 			printf("���䣻%d\n",pTemp->age);
 			printf("��ע��%s\n",pTemp->note);
-			}  break;
-		case 3:
+			flag = 0;
+			} 
+			 break;
+		case'3':
 			if(strcmp(s,pTemp->sex)==0)
 			{
 			printf("ѧ�ţ�%s\n",pTemp->id);
@@ -290,8 +379,10 @@ jump:	while(pTemp!=NULL)
 			printf("�Ա�%s\n",pTemp->sex);
 			printf("���䣻%d\n",pTemp->age);
 			printf("��ע��%s\n",pTemp->note);
+			flag = 0;
 			}
-		case 4:  
+			break;
+		case'4':  
 			if(Y==pTemp->age)
 			{
 			printf("ѧ�ţ�%s\n",pTemp->id);
@@ -299,12 +390,17 @@ jump:	while(pTemp!=NULL)
 			printf("�Ա�%s\n",pTemp->sex);
 			printf("���䣻%d\n",pTemp->age);
 			printf("��ע��%s\n",pTemp->note);
-			}  break;
-			
-			
+			flag = 0;
+			} 
+			 break;
 	} 
 	pTemp=pTemp->next;
 	}
+	if(flag)
+	{
+		printf("\t\t\tδ��ѯ�������Ϣ�������ԣ�\n");
+		goto RE1; 
+	}
 	system("pause");
 	
 }
@@ -342,23 +438,41 @@ struct student* Change()
 		pNow = pNow->next;
 	}
 	pNow->next=NULL;
-	pTemp=phead;
 	char s[20];
-	printf("\t\t\t������Ҫ�޸�ѧ����ѧ�ţ�");
-	scanf("%s",s);
+	char m[10]; int flag=1;
+RE1:	printf("\t\t\t���������룺 "); 
+	scanf("%s",m);
+	if(strcmp(m,"123456")==0)
+	{
+RE:		pTemp=phead;
+		printf("\t\t\t������Ҫ�޸�ѧ����ѧ�ţ�");
+		scanf("%s",s);
 	while(pTemp!=NULL)
 	{
 		if(strcmp(s,pTemp->id)==0)
 		{
-			printf("\t\t\tѧ�ţ�"); scanf("%s",pTemp->id);
-			printf("\t\t\t������"); scanf("%s",pTemp->name);
-			printf("\t\t\t�Ա�"); scanf("%s",pTemp->sex);
-			printf("\t\t\t���䣻"); scanf("%d",&pTemp->age);
-			printf("\t\t\t��ע��"); scanf("%s",pTemp->note);
+			printf("\t\t\tѧ�ţ�%s\t\t\t�޸�ѧ�ţ�",pTemp->id); scanf("%s",pTemp->id);
+			printf("\t\t\t������%s\t\t\t�޸�������",pTemp->name); scanf("%s",pTemp->name);
+			printf("\t\t\t�Ա�%s\t\t\t�޸��Ա�",pTemp->sex); scanf("%s",pTemp->sex);
+			printf("\t\t\t���䣻%d\t\t\t�޸����䣺",pTemp->age); scanf("%d",&pTemp->age);
+			printf("\t\t\t��ע��%s\t\t\t�޸ı�ע��",pTemp->note); scanf("%s",pTemp->note);
+			flag = 0;
 			break;
 		}
 		pTemp=pTemp->next;
 	 }
+	 } 
+	 else
+	 {
+	 	printf("\t\t\t��������������������룡\n");
+	 	goto RE1;
+	 }
+	 if(flag)
+	 {
+	 	printf("\t\t\tѧ������������������룡\n");
+		 goto RE; 
+	 }
+	 
 	 system("pause");
 	 fclose(fp); 
 	 return phead;
@@ -367,11 +481,11 @@ struct student* Change()
 
 int main()
 {
-	system("mode con cols=80 lines=30");
+	/*system("mode con cols=80 lines=30");*/
 	system("color F5");
 	char x=0;
 	char m[7]; 
-	struct student *head;
+	struct student *head=NULL;
 	Re: 
 	setposition(40,14);
 	printf("���������룺                                                           ");
@@ -422,7 +536,8 @@ int main()
 	}
 	else
 	{
-		printf("\t\t\t������������ԣ�����\n");
+		setposition(40,14);
+		printf("\t\t\t�������!\n");  // ������ 
 		goto Re; 
 	}
 	 
diff --git a/未命名1.exe b/未命名1.exe
index ee827e9..0597f79 100644
Binary files a/未命名1.exe and b/未命名1.exe differ