diff --git a/c1.c b/c1.c
deleted file mode 100644
index 6fc9b42..0000000
--- a/c1.c
+++ /dev/null
@@ -1,37 +0,0 @@
-void input()				//³É¼¨ÊäÈë 
-{
-	Student s[50];
-	system("cls");
-	int i=0;
-	FILE *fp;
-	fp=fopen("a.txt","a+");
-	printf("ÇëÒÔ0×÷ΪÊäÈëѧÉúѧºÅÐÅÏ¢µÄ½áÊø£¡\n");
-		do
-		{ 
-			printf("ÊäÈëѧÉúµÄѧºÅ£º");
-			scanf("%lf",&s[i].no);
-			printf("ÊäÈëѧÉúµÄÐÕÃû£º");
-			scanf("%s",s[i].name);
-			printf("ÊäÈëѧÉúµÄCÓïÑԳɼ¨£º");
-			scanf("%f",&s[i].cscore);
-			if(s[i].no!=0)
-				fprintf(fp,"%.0lf  %-4s  %.1f\n",s[i].no,s[i].name,s[i].cscore);
-		}while(s[i].no!=0);
-		fclose(fp);
-}
-void output()						//³É¼¨Êä³ö 
-{
-	if((fp=fopen("a.txt","r"))==NULL)
-	{
-    printf("Cannot open the file!\n");
-
-	}
-    printf("\t\t\tÈ«²¿µÄѧÉúÐÅÏ¢£º\n");
-    int k=0;
-	while(fscanf(fp,"%lf%s%f",&s[k].no,s[k].name,&s[k].cscore)!=EOF) 
-	{
-	printf("\t\t\t%.0lf\t%s\t%.1f\n",s[k].no,s[k].name,s[k].cscore);
-	k++;
-	}
-	fclose(fp);	
-}
diff --git a/c2.c b/c2.c
deleted file mode 100644
index 05f319d..0000000
--- a/c2.c
+++ /dev/null
@@ -1,107 +0,0 @@
-void modify()					//³É¼¨ÐÞ¸Ä 
-{
-	char st[30];
-	double x,num;
-	float nu;
-	int k=0;
-	system("cls");
-	if((fp=fopen("a.txt","r"))==NULL)
-	{
-	printf("Cannot open the file!\n");
-	return;
-	}
-	while(fscanf(fp,"%lf%s%f",&s[k].no,s[k].name,&s[k].cscore)!=EOF)
-	{
-	k++;
-	}
-	fclose(fp);
-
-	printf("ÊäÈë1±íʾÓÃѧºÅÐ޸ģ¬ÊäÈë2±íʾÓÃÐÕÃûÐ޸ģ¡ÇëÑ¡Ôñ£º\n");
-	scanf("%lf",&x);
-	if(x==1)
-	{
-		printf("ÇëÊäÈëÐ޸ijɼ¨È˵ÄѧºÅ£º");
-		scanf("%lf",&num);
-		int i;
-		for(i=0;i<k;i++)
-		if(num==s[i].no)
-		{
-			printf("ÇëÊäÈëÐ޸ĵijɼ¨£º\n");
-			scanf("%f",&nu);
-			s[i].cscore=nu;
-			fp=fopen("a.txt","w");
-			for(i=0;i<k;i++)	
-			fprintf(fp,"%.0lf  %s  %.1f\n",s[i].no,s[i].name,s[i].cscore);
-			fclose(fp);
-			printf("Ð޸ijɹ¦\n");
-			return;
-		}
-		printf("ûÓÐÕÒµ½¸ÃÉúµÄÐÅÏ¢£¡\n");
-		return;
-	}
-		if(x==2)
-		{	
-			printf("ÇëÊäÈëÐ޸ijɼ¨È˵ÄÐÕÃû£º");
-		scanf("%s",st);
-		int i;
-		for(i=0;i<k;i++)
-		if(strcmp(s[i].name,st)==0)
-			{
-				printf("ÇëÊäÈëÐ޸ĵijɼ¨£º\n");
-				scanf("%f",&nu);
-				s[i].cscore=nu;
-				fp=fopen("a.txt","w");
-				for(i=0;i<k;i++)
-				fprintf(fp,"%.0lf  %s  %.1f\n",s[i].no,s[i].name,s[i].cscore);
-				fclose(fp);
-				printf("Ð޸ijɹ¦\n");
-				return;
-			}	
-		printf("ûÓÐÕÒµ½¸ÃÉúµÄÐÅÏ¢£¡\n");
-		return;
-		}
-		} 
-void lookat() 					//³É¼¨²éѯ 
-{
-	char st[30];
-	double x,num;
-	int k=0;
-	system("cls");
-	if((fp=fopen("a.txt","r"))==NULL)
-	{
-	printf("Cannot open the file!\n");
-	return;
-	}
-	while(fscanf(fp,"%lf%s%fd",&s[k].no,s[k].name,&s[k].cscore)!=EOF)
-	{
-	k++;
-	}
-	printf("ÊäÈë1±íʾÓÃѧºÅ²éѯ£¬ÊäÈë2±íʾÓÃÐÕÃû²éѯ£¡ÇëÑ¡Ôñ£º\n");
-	scanf("%lf",&x);
-	if(x==1)
-	{
-		printf("ÇëÊäÈë²éѯµÄѧºÅ£º");
-		scanf("%lf",&num);
-		for(i=0;i<k;i++)
-		if(num==s[i].no)
-		{
-			printf("%.0lf %s %.1f\n",s[i].no,s[i].name,s[i].cscore);
-			return;		
-
-		}
-		printf("¶Ô²»Æð£¬ÕÒ²»µ½¸ÃÉú£¡\n");
-		return;
-
-	}
-		if(x==2)
-		{printf("ÇëÊäÈë²éѯµÄÐÕÃû£º");
-		scanf("%s",st);
-		for(i=0;i<k;i++)
-		if(strcmp(s[i].name,st)==0)
-		{
-			printf("%.0lf %s %.1f\n",s[i].no,s[i].name,s[i].cscore);
-			return;
-		}
-		printf("¶Ô²»Æð£¬ÕÒ²»µ½¸ÃÉú£¡\n");
-		}
-}
diff --git a/c2.cpp b/c2.cpp
deleted file mode 100644
index 9d6724a..0000000
--- a/c2.cpp
+++ /dev/null
@@ -1,62 +0,0 @@
-#include"c1.cpp"
-void modify()					//³É¼¨ÐÞ¸Ä 
-{
-	char st[30];
-	double x,num;
-	float nu;
-	int k=0;
-	system("cls");
-	if((fp=fopen("a.txt","r"))==NULL)
-	{
-	printf("Cannot open the file!\n");
-	return;
-	}
-	while(fscanf(fp,"%lf%s%f",&s[k].no,s[k].name,&s[k].cscore)!=EOF)
-	{
-	k++;
-	}
-	fclose(fp);
-
-	printf("ÊäÈë1±íʾÓÃѧºÅÐ޸ģ¬ÊäÈë2±íʾÓÃÐÕÃûÐ޸ģ¡ÇëÑ¡Ôñ£º\n");
-	scanf("%lf",&x);
-	if(x==1)
-	{
-		printf("ÇëÊäÈëÐ޸ijɼ¨È˵ÄѧºÅ£º");
-		scanf("%lf",&num);
-		for(int i=0;i<k;i++)
-		if(num==s[i].no)
-		{
-			printf("ÇëÊäÈëÐ޸ĵijɼ¨£º\n");
-			scanf("%f",&nu);
-			s[i].cscore=nu;
-			fp=fopen("a.txt","w");
-			for(i=0;i<k;i++)	
-			fprintf(fp,"%.0lf  %s  %.1f\n",s[i].no,s[i].name,s[i].cscore);
-			fclose(fp);
-			printf("Ð޸ijɹ¦\n");
-			return;
-		}
-		printf("ûÓÐÕÒµ½¸ÃÉúµÄÐÅÏ¢£¡\n");
-		return;
-	}
-		if(x==2)
-		{	
-			printf("ÇëÊäÈëÐ޸ijɼ¨È˵ÄÐÕÃû£º");
-		scanf("%s",st);
-		for(int i=0;i<k;i++)
-		if(strcmp(s[i].name,st)==0)
-			{
-				printf("ÇëÊäÈëÐ޸ĵijɼ¨£º\n");
-				scanf("%f",&nu);
-				s[i].cscore=nu;
-				fp=fopen("a.txt","w");
-				for(i=0;i<k;i++)
-				fprintf(fp,"%.0lf  %s  %.1f\n",s[i].no,s[i].name,s[i].cscore);
-				fclose(fp);
-				printf("Ð޸ijɹ¦\n");
-				return;
-			}	
-		printf("ûÓÐÕÒµ½¸ÃÉúµÄÐÅÏ¢£¡\n");
-		return;
-		}
-		} 
diff --git a/c3.c b/c3.c
deleted file mode 100644
index 92f29e6..0000000
--- a/c3.c
+++ /dev/null
@@ -1,70 +0,0 @@
-void section()                //ѧÉú³É¼¨·Ö¶Î
-{
-	system("cls");
-	int k=0;
-	double c;
-	if((fp=fopen("a.txt","r"))==NULL)
-	{
-	printf("Cannot open the file!\n");
-
-	}
-	while(fscanf(fp,"%lf%s%f",&s[k].no,s[k].name,&s[k].cscore)!=EOF)
-	{
-	k++;
-	}
-	printf("\t\t\t  90·ÖÒÔÉÏѧÉúµÄÐÅÏ¢!\n");
-	for(i=0;i<k;i++)
-		if(s[i].cscore>=90)
-			printf("\t\t\t%.0lf %s %.1f\n",s[i].no,s[i].name,s[i].cscore);
-			printf("\n\n");
-	printf("\t\t\t  80µ½89·ÖѧÉúµÄÐÅÏ¢!\n");
-	for(i=0;i<k;i++)
-		if(s[i].cscore<90&&s[i].cscore>=80)
-			printf("\t\t\t%.0lf %s %.1f\n",s[i].no,s[i].name,s[i].cscore);
-			printf("\n\n");
-	printf("\t\t\t  60µ½79·ÖѧÉúµÄÐÅÏ¢!\n");
-	for(i=0;i<k;i++)
-		if(s[i].cscore>=60&&s[i].cscore<80)
-			printf("\t\t\t%.0lf %s %.1f\n",s[i].no,s[i].name,s[i].cscore);
-			printf("\n\n");
-	printf("\t\t\t  60·ÖÒÔÏÂѧÉúµÄÐÅÏ¢!\n");
-	for(i=0;i<k;i++)
-		if(s[i].cscore<60)
-		printf("\t\t\t%.0lf %s %.1f\n",s[i].no,s[i].name,s[i].cscore);
-		printf("\n\n");
-} 
-void rank()                       //³É¼¨µÄÅÅÐò
-{
-	Student t;
-	int k=0;
-    int sum=0,j=0;
-	system("cls");
-	if((fp=fopen("a.txt","r"))==NULL)
-	{
- 	printf("Cannot open the file!\n");
-
-	}
-	while(fscanf(fp,"%lf%s%f",&s[k].no,s[k].name,&s[k].cscore)!=EOF)
-	{
-	k++;
-	}
-	for(i=0;i<k;i++)
-		for(j=i+1;j<k+1;j++)
-			if(s[i].cscore<s[j].cscore)
-			{t=s[i];s[i]=s[j];s[j]=t;}
-			for(i=0;i<k;i++)
-			{
-	  		if(s[i].cscore>=60)
-	  		j++;
-	  		}
-			for(i=0;i<k;i++)
-			sum=sum+s[i].cscore;
-			for(i=0;i<k;i++)
-			printf("\t\t\tµÚ%dÃû:%.0lf  %-4s %.1f\n",i+1,s[i].no,s[i].name,s[i].cscore);
-			printf("\t\t\t×î¸ß·Ö:%.1lf\n",s[0].cscore);
-			printf("\t\t\t×îµÍ·Ö:%.1lf\n",s[k-1].cscore);
-			printf("\t\t\t¼°¸ñÂÊ:%.2lf\n",j/k);
-			printf("\t\t\tƽ¾ù·Ö:%.2lf\n",sum/k);
-}
-
-
diff --git a/头文件.exe b/头文件.exe
index c688efa..b2c802b 100644
Binary files a/头文件.exe and b/头文件.exe differ