diff --git a/3.c b/4.c
similarity index 96%
rename from 3.c
rename to 4.c
index e7feb12..5f46268 100644
--- a/3.c
+++ b/4.c
@@ -33,7 +33,7 @@ void credit(int n)
 	printf("请输入用于存放文件的路径及路径名:");
 	scanf("%s",fpname);
 	getchar();
-	fp=fopen(fpname,"w+");
+	fp=fopen(fpname,"a+");
 	head=(struct student *)malloc(sizeof(struct student));
 	printf("请输入学生学号 姓名 性别 出生年 月 日 地址 电话 e_mail:");
 	scanf("%d %s %c %d %d %d %s %s %s",&head->number,head->name,&head->sex,&(*head).birthday.year,&(*head).birthday.month,&(*head).birthday.day,head->address,head->tel,head->E_mail);
@@ -67,9 +67,9 @@ int show2(int n)
 	for(i=0;i<n;i++)
 	{
 		fscanf(fp,"%d %s %c %d %d %d %s %s %s",&head->number,head->name,&head->sex,&(*head).birthday.year,&(*head).birthday.month,&(*head).birthday.day,head->address,head->tel,head->E_mail);
-		printf("%d %s %c %d %d %d %s %s %s",head->number,head->name,head->sex,(*head).birthday.year,(*head).birthday.month,(*head).birthday.day,head->address,head->tel,head->E_mail);
-		fclose(fp);
+		printf("%d %s %c %d %d %d %s %s %s",&head->number,head->name,head->sex,(*head).birthday.year,(*head).birthday.month,(*head).birthday.day,head->address,head->tel,head->E_mail);
 	}
+		fclose(fp);
 }
 int search1(int n)
 {	
@@ -114,7 +114,6 @@ int search2(int n)
 	fscanf(fp,"%d %s %c %d %d %d %s %s %s",&head->number,head->name,&head->sex,&(*head).birthday.year,&(*head).birthday.month,&(*head).birthday.day,head->address,head->tel,head->E_mail);
 	if(strcmp(checkname,head->name)==0)
 	{
-		for(i=0;i<n;i++)
 	    fprintf(fp,"%d %s %c %d %d %d %s %s %s",head->number,head->name,head->sex,(*head).birthday.year,(*head).birthday.month,(*head).birthday.day,head->address,head->tel,head->E_mail);
 	    fclose(fp);
 	    return(1);
diff --git a/3.exe b/4.exe
similarity index 75%
rename from 3.exe
rename to 4.exe
index a398488..e934f6f 100644
Binary files a/3.exe and b/4.exe differ