commit 4140ffff4e3b2d94c9f59aa02ef2aa383c2ba5e7
Author: Your Name <18408000408@stu.hut.edu.cn>
Date:   Fri Jan 11 13:54:37 2019 +0800

    first commit

diff --git a/课设.c b/课设.c
new file mode 100644
index 0000000..13eed54
--- /dev/null
+++ b/课设.c
@@ -0,0 +1,335 @@
+#include<stdio.h>
+#include<io.h> 
+#include <unistd.h>   //int access(const char *, int); // »ñÈ¡ÎļþµÄȨÏÞ
+#include<stdlib.h>    // system()
+#include<string.h>
+#define MAX 200        //¶¨ÒåMAX±íʾ¿É¼Èë×î´óѧÉúÊý 
+
+struct student         //student½á¹¹ÌåÃû   £¨³ÉÔ±½á¹¹ÀàÐÍ£©¶¨ÒåÁËѧÉúµÄ»ù±¾ÐÅÏ¢ 
+{
+	char no[10];              //³ÉÔ±±äÁ¿ ³ÉÔ±Ãû ѧºÅ 
+	char name[50];            //ÐÕÃû 
+	float score;               //³É¼¨ 
+};  
+
+struct data           //Ö÷½á¹¹ÀàÐÍ 
+{
+	int count;                 //ѧÉú¸öÊý 
+	struct student stu[MAX];   //½á¹¹ÀàÐ͵ÄǶÌ× 
+}dd;                           //ddÊǽṹÌådataÀàÐ͵ıäÁ¿  È«¾Ö½á¹¹Ìå±äÁ¿Ãû 
+
+
+void menu();
+void to_menu();
+void add_data();
+void edit_data();
+void fen_shu_duan();
+void query_data_name();
+void query_data_no();
+void sort_data_score();
+void read_data();
+void view_data();
+void save_data();
+
+
+
+void menu()
+{
+	system("cls");                                                           /*ÇåÆÁ*/ 
+	printf("\n\n\n\n\n");
+	printf("\t\t|-----------------------ѧÉúCÓïÑԳɼ¨¼Ç¼²¾----------------------|\n");
+	printf("\t\t|\t             0. Í˳ö                                     |\n");
+	printf("\t\t|\t             1. ²é¿´ËùÓÐѧÉú³É¼¨                         |\n");
+	printf("\t\t|\t             2. ÊäÈëѧÉú³É¼¨                             |\n");     
+	printf("\t\t|\t             3. ÐÞ¸ÄѧÉú³É¼¨                             |\n");
+	printf("\t\t|\t             4. ²éѯ³É¼¨£¨Ñ§ºÅ£©                         |\n");
+	printf("\t\t|\t             5. ²éѯ³É¼¨£¨ÐÕÃû£©                         |\n");
+	printf("\t\t|\t             6. ¼°¸ñÂÊ                                   |\n");
+	printf("\t\t|\t             7. ³É¼¨·ÖÊý¶Î                               |\n");
+	printf("\t\t|----------------------------------------------------------------|\n");
+	printf("\t\t ");
+    
+}
+
+//»Øµ½Ö÷²Ëµ¥
+
+void to_menu()
+{
+	char c1,c2;
+	printf("\n\n°´»Ø³µ·µ»ØÖ÷²Ëµ¥¡­");
+	scanf("%c%c",&c1,&c2);           //µÚÒ»¸ö×Ö·ûÈ·ÈÏÉϴεÄÈ·Èϻسµ¼ü 
+	menu();
+ } 
+
+
+	 /*
+¶ÔÓ¦µÄÑÕÉ«Âë±í£º
+0 = ºÚÉ«       8 = »ÒÉ«
+1 = À¶É«       9 = µ­À¶É«
+2 = ÂÌÉ«       A = µ­ÂÌÉ«
+3 = dzÂÌÉ«     B = µ­Ç³ÂÌÉ«
+4 = ºìÉ«       C = µ­ºìÉ«
+5 = ×ÏÉ«       D = µ­×ÏÉ«
+6 = »ÆÉ«       E = µ­»ÆÉ«
+7 = °×É«       F = ÁÁ°×É« 
+*/
+ 
+    
+int main(void)
+{
+	system("color E9");
+	int fun;
+	read_data();
+	menu();
+	while(1)
+	{
+		printf("\t\t       ÇëÊäÈ빦Äܺţº",&fun);
+		scanf("%d",&fun);
+		switch(fun)
+		{
+			
+			case 0:
+			break;
+			
+			case 1:
+			view_data();
+			break;
+			
+			case 2:
+		    add_data();
+			break;
+			
+			case 3:
+			edit_data();
+			break;
+			
+			case 4:
+			query_data_no();
+			break;
+			
+			case 5:
+			query_data_name();
+			break;
+			
+			case 6:
+			sort_data_score();
+			break;
+			
+			case 7:
+			fen_shu_duan();
+			break;
+			
+			
+		}
+		if(fun==0)break;
+		to_menu();
+	}
+ } 
+ 
+ 
+void view_data()         // ²éѯ×ܱí 
+{
+	int i;
+	printf("ѧºÅ\t ÐÕÃû\t CÓïÑԳɼ¨");
+	printf("\n--------------------------------------------------------------------------\n");
+	for(i=0;i<dd.count;i++)
+	printf("%s\t%s\t%.lf\n",dd.stu[i].no,dd.stu[i].name,dd.stu[i].score);
+	
+}
+
+void save_data()
+{
+	FILE *fp;
+	int i,k;
+	k=dd.count;
+	fp=fopen("d/:chen.txt","w");    //´ò¿ªÎļþÒÔ±ãдÈëÊý¾Ý
+	fwrite(&k,sizeof(int),1,fp);    // kÊä³öÊý¾ÝµÄµØÖ· ½«kµÄÊý¾ÝÊäÈëµ½fpÎļþÖУ¬¶Áдһ´Î ÿ´ÎÊäÈëÕ¼sizeof(int)¸ö×Ö½Ú 
+	for(i=0;i<k;i++)                //×¼±¸ÒªÐ´ÈëÎļþµÄÊý×é
+     	fwrite(&dd.stu[i].no,sizeof(struct student),1,fp);
+	fclose(fp);                     //дÈëÍê±Ï£¬¹Ø±ÕÎļþ 
+}
+
+void sort_data_score()                    //¼°¸ñÂÊ 
+ {
+ 	int a[2]={0,0};
+	int i;
+	int j,k;
+	float pass;
+	for(i=0;i<dd.count;i++)            // forÑ­»·Ã¿¸öѧºÅµÄѧÉú 
+	{
+		if(dd.stu[i].score>=60&&dd.stu[i].score<=100)
+		  a[0]++;
+		else if(dd.stu[i].score<60)
+		  a[1]++;
+	}
+	j=a[0];
+	k=a[1];
+	pass=j/((j+k)*1.0)*100;
+    printf("¼°¸ñÂÊ£º%.2f%%",pass);
+ }
+ 
+
+void add_data()                            //Ìí¼ÓѧÉú³É¼¨ 
+{
+	struct student st;                     // ´´½¨½á¹¹Ìå±äÁ¿st 
+	int b;
+	int k;
+	while(1)
+	{
+		printf("\nÇëÊäÈëѧÉúÐÅÏ¢£º");
+		printf("\nѧºÅ \tÐÕÃû \tCÓïÑԳɼ¨");
+		printf("\n-------------------------------------------------------------------------------\n");
+		scanf("%s%s%f",st.no,st.name,&st.score);
+		k=dd.count;
+		strcpy(dd.stu[k].no,st.no);
+		strcpy(dd.stu[k].name,st.name);
+		dd.stu[k].score=st.score;
+		dd.count++;
+		printf("\n\nÊÇ·ñ¼ÌÐøÌí¼ÓѧÉúÐÅÏ¢[1-Yes 0-No]:");
+		scanf("%d",&b);
+		if(b==0)break; 
+	}
+	save_data();                         
+} 
+ 
+ 
+void read_data()                   //½«Êý¾Ý´ÓÎļþ¶Áµ½½á¹¹ÌåÊý×éÖÐ          
+ {
+ 	FILE *fp;
+ 	int i,k;
+ 	struct student st;
+ 	k=0;
+    if((fp=fopen("d:/chen.txt","r"))==NULL) // Èç¹ûÎļþ²»´æÔÚ
+    {
+        dd.count=0;
+    }
+    else
+    {
+        fread(&k,sizeof(int),1,fp);
+        dd.count=k;
+        for(i=0;i<k;i++)   
+        {
+            fread(&dd.stu[i],sizeof(struct student),1,fp);
+        }
+        fclose(fp);
+    }
+	 
+ }
+ 
+
+ 
+void edit_data()                              //ÐÞ¸ÄѧÉú³É¼¨ 
+{
+	int i,k;
+	char no[10],name[50];
+	float score;
+	printf("\nÇëÊäÈëÒªÐÞ¸ÄѧÉúµÄѧºÅ£º");
+	scanf("%s",no);
+	k=-1;
+	for(i=0;i<dd.count;i++)          //forÑ­»·Ã¿¸öѧºÅµÄѧÉú 
+	{
+		if(strcmp(dd.stu[i].no,no)==0)    //Èô¸ÃÁ½¸öÊýÏàͬ 
+		{
+			k=i;
+			break;
+		}
+	}
+	if(k==-1)
+	{
+		printf("ûÓÐÕÒµ½¸Ãͬѧ£¨Ñ§ºÅ-%s£©",no);
+	}
+	else
+	{
+		printf("\nѧºÅ \tÐÕÃû \tCÓïÑԳɼ¨");
+		printf("\n-------------------------------------------------------------------------------\n");
+		scanf("%s%s%f",no,name,&score);
+		strcpy(dd.stu[k].no,no);
+		strcpy(dd.stu[k].name,name);
+		dd.stu[k].score=score;
+		save_data();
+		printf("\n\n±à¼­Ñ§Éú¼Ç¼£¨Ñ§ºÅ-%s£©³É¹¦!",no);
+	}
+ } 
+ 
+ 
+void query_data_no()                       //°´Ñ§ºÅ²éÕҳɼ¨ 
+{
+	int i,k;
+	char no[10];
+	printf("\nÇëÊäÈëÒª²éѯѧÉúµÄѧºÅ£º");
+	scanf("%s",no);
+	k=-1;
+	for(i=0;i<dd.count;i++)          //forÑ­»·Ã¿¸öѧºÅµÄѧÉú 
+	{
+		if(strcmp(dd.stu[i].no,no)==0)   //¶¨Î»½á¹¹Êý×éÔªËØ   Èç¹ûѧÉúѧºÅºÍnoµÄÏà֤ͬÃ÷ÕÒµ½ÁË
+		{
+			if(k==-1)                    
+			{
+				printf("\n\nѧºÅ\tÐÕÃû\tCÓïÑԳɼ¨");
+				  printf("\n--------------------------------------\n");
+			}
+			k=i;
+			printf("%s\t%s\t%.1f\n",dd.stu[i].no,dd.stu[i].name,dd.stu[i].score);
+		}
+	 } 
+	 if(k==-1)           //kֵû±ä 
+	  {
+	 	printf("\n\nûÓÐÕÒµ½¸ÃѧÉúѧºÅ£¨Ñ§ºÅ-%s£©£¡",no);
+	 }
+}
+//²éѯѧºÅ 
+
+void query_data_name()                   //°´ÐÕÃû²éÕҳɼ¨  
+{
+	int i,k;
+	char name[50];
+	printf("\nÇëÊäÈëÒª²éѯѧÉúµÄÐÕÃû£º");
+	scanf("%s",name);
+	k=-1;
+	for(i=0;i<dd.count;i++)       //forÑ­»·Ã¿¸öѧºÅµÄѧÉú 
+	{ 
+		if(strcmp(dd.stu[i].name,name)==0)   //¶¨Î»½á¹¹Êý×éÔªËØ   Èç¹ûѧÉúÐÕÃûºÍnameµÄÏà֤ͬÃ÷ÕÒµ½ÁË
+		{
+			if(k==-1)
+			{
+				printf("\n\nѧºÅ\tÐÕÃû\tCÓïÑԳɼ¨");
+				  printf("\n------------------------------\n");
+			}
+			k=i;
+			printf("%s\t%s\t%.1f\n",dd.stu[i].no,dd.stu[i].name,dd.stu[i].score);
+		}
+	 } 
+	 if(k==-1)
+	 {
+	 	printf("\n\nûÓÐÕÒµ½¸ÃѧÉúÐÕÃû£¨ÐÕÃû-%s£©£¡",name);
+	 }
+	
+ } 
+ 
+void fen_shu_duan()                  //ѧÉú³É¼¨·Ö¶Î 
+{
+	int a[5]={0,0,0,0,0};
+	int i;
+	for(i=0;i<dd.count;i++)         //forÑ­»·Ã¿¸öѧºÅµÄѧÉú 
+	{
+		if(dd.stu[i].score<60)
+		  a[0]++;
+		else if(dd.stu[i].score>=60&&dd.stu[i].score<=69)
+		  a[1]++;
+		else if(dd.stu[i].score>=70&&dd.stu[i].score<=79)
+		  a[2]++;
+		else if(dd.stu[i].score>=80&&dd.stu[i].score<=89)
+		  a[3]++;
+		else
+		  a[4]++;
+	}
+	printf("\t\t60·ÖÒÔÏ£º%d\n",a[0]);
+	printf("\t\t60~69·Ö£º%d\n",a[1]);
+	printf("\t\t70~79·Ö£º%d\n",a[2]);
+	printf("\t\t80~89·Ö£º%d\n",a[3]);
+	printf("\t\t90·ÖÒÔÏ£º%d\n",a[4]);
+}
+ 
+ 
+
+