diff --git a/考试系统.c b/考试系统.c
new file mode 100644
index 0000000..3501f52
--- /dev/null
+++ b/考试系统.c
@@ -0,0 +1,284 @@
+#include<stdio.h>
+#include<stdlib.h>
+
+
+typedef struct student{
+	char name[25];
+	int num;
+	int t;
+	int f; 
+	float total;
+}STU; 
+typedef struct textpaper{
+	char title[1000];
+	char a[100];
+	char b[100];
+	char c[100];
+	char d[100];
+	char answer;
+}Paper;
+void Openfile();//´ò¿ªÎļþ
+float pinfen(char,char);//ÆÀ·Ö 
+void chengji(); //°´Õճɼ¨ÌݶÈÊä³ö³É¼¨ 
+void design();//³öÌâϵͳ 
+void check();//²é¿´Ìâ¿â 
+void del();//ɾ³ýÌâÄ¿
+void alter();//ÐÞ¸ÄÌâÄ¿ 
+int a=0,d=0,t=0;//a±íʾÈËÊý t³õʼ»¯ÌâÄ¿¸öÊý <-È«¾Ö±äÁ¿ 
+struct student stu[100];
+Paper problem[1000]; 
+int main(){
+	char ch,ch1,key;//key±íʾѧÉúÊäÈëµÄ´ð°¸ 
+	float sum=0,count=0;
+	int b,c;
+	Openfile();//´ò¿ªÌâ¿â 	
+    printf("================================================================================\n\n");
+    printf("================================================================================\n\n");
+    printf("*************************»¶Ó­Ê¹Óÿ¼ÊÔϵͳ*******************************\n\n");
+    printf("--------------------------------------------------------------------------------\n\n");
+    printf("********************************************************************************\n\n");
+    printf("================================================================================\n\n");
+    printf("Çë°´ÈÎÒâ¼ü½øÈ뿼ÊÔϵͳϵͳ£º\n");
+    getchar();
+    system("cls");
+    printf("ÊÇ·ñ½øÈ뿼ÊÔ: y/n yΪÊÇ£»nΪ²»ÊÇ\n");
+    scanf("%c",&ch1); 
+    getchar(); 
+    if(ch1=='y'||ch1=='Y'){
+	    printf("--------------------------ÏȼÈëѧÉúÐÅÏ¢-----------------------------\n");
+		printf("--------------------ÊÇ·ñÑ¡Ôñ¼Èë¶àÈË Y/N --------\n");
+		printf("--------------------ÇëÊäÈë-------\n");
+		scanf("%c",&ch);
+		getchar(); 
+	
+		if(ch=='y'||ch=='Y'){
+			printf("ÇëÊäÈëÄúÐèҪ¼ÈëµÄÈËÊý\n"); 
+			scanf("%d",&a);
+			for(int i=0;i<a;i++){
+				printf("ÇëÊäÈëµÚ%dλѧÉúµÄÐÅÏ¢\n",i+1);
+				scanf("%s %d",stu[i].name,&stu[i].num);
+				getchar(); 
+			}	
+			system("cls");
+		}
+		else{
+			a=1; 
+			printf("µ¥Ãû¿¼ÉúÇëÊäÈ뿼ÉúÐÅÏ¢:\n");
+			scanf("%s %d",stu[0].name,&stu[0].num);// 
+			getchar();
+			system("cls");
+		    }
+			printf("×¼±¸½øÈ뿼ÊÔÁË£¡£¡Äã×¼±¸ºÃÁËÂ𣡣¡\n");
+			printf("ÇëÊäÈëY½øÈ뿼ÊÔ \n");
+			scanf("%c",&ch);
+			getchar();
+			 
+			if(ch=='y'||ch=='Y'){
+				printf("Çë×¢Ò⣬ËùÓд𰸾ùÐèÒªÌî´óд¡£·ñÔò£¬ÏµÍ³½«ÈÏΪÄúµÄ´ð°¸´íÎó£¡\n");
+				printf("±¾´Î¿¼ÊÔÒ»¹²ÓÐ%dµÀÌâ\n",t); 
+				printf("Ç뿼ÉúÄÍÐÄ×÷´ð£¬ÕùÈ¡ÓÅÒì³É¼¨!\n"); 
+				}
+				for(int j=0;j<a;j++){
+					sum=0; 
+					for(int i=0;i<t;i++){
+						printf("µÚ%dÌâ\n",i+1);
+						printf("ÌâÄ¿£º\n"); 
+						printf("%s\n",problem[i].title);
+						printf("A:%s\n",problem[i].a);
+						printf("B:%s\n",problem[i].b);
+						printf("C:%s\n",problem[i].c);
+						printf("D:%s\n",problem[i].d);
+						printf("ÇëÊäÈëÄúµÄ´ð°¸£º");
+						key=getchar();
+						getchar();
+						count=pinfen(key,problem[i].answer);//ÔÚ´ðÌâµÄ¹ý³ÌÖÐÆÀ¶¨·ÖÊý 
+						sum+=count;
+						system("cls");//ÇåÆÁ
+							}
+					stu[j].total=sum;
+					printf("Ãû×Ö£º%s\n",stu[j].name); 
+					printf("×Ü·Ö:%.2f\n",stu[j].total);
+									
+			}
+		chengji();//Êä³öѧÉú³É¼¨ 
+	}
+	else{
+		while(1){//
+		system("cls");	
+		printf("          *************************²Ëµ¥****************************\n");
+		printf("          *    1.         ÎÒÒª³öÌâ              2.   ²é¿´Ìâ¿â      *\n");
+		printf("          *    3.         ɾ³ýÌâÄ¿              4.   ÐÞ¸ÄÌâÄ¿      *\n");
+		printf("          *********************************************************\n");
+z:		printf("ÇëÊäÈëÄãҪѡÔñµÄ¹¦ÄÜ£º\n");
+		scanf("%d",&c);
+		getchar();
+		switch(c){
+			case 1:
+		    design();//³öÌâϵͳ 
+		    
+			break;
+			case 2:
+			check();//²é¿´Ìâ¿â
+		
+			break;
+			case 3:
+			del();//ɾ³ýÌâÄ¿
+			break;
+			case 4:
+			alter();//ÐÞ¸ÄÌâÄ¿ 
+			break;
+			default:
+			printf("ÄúÊäÈëµÄÐòºÅÓÐÎó£¬ÇëÖØÐÂÊäÈë:(\n");
+			goto z;	//ÍØÕ¹ÁËgotoÓï¾äµÄʹÓà ͷÎļþstdio 
+		 }
+		}
+
+		
+	} 
+    
+	
+		return 0;
+	}
+void Openfile(){ //´ò¿ªÎļþ 
+	int i=0;
+	FILE *fp1;
+	fp1= fopen("¿¼ÊÔÌâ¿âdata2.txt","ab+");//ÒÔ×·¼ÓµÄÐÎʽ´ò¿ªÎı¾Îļþ(Èô²»´æÔÚ£¬Ôòн¨£»·´Ö®£¬ÔÚÔ­Îļþºó×·¼Ó)²¢ÇÒÔÚÎļþβ²¿×·¼ÓÊý¾ÝÖ®ºó£¬¿ÉÒÔÓÉλÖú¯ÊýÉèÖÿªÊ¼¶ÁµÄÆðʼλÖÃ
+	if(fp1==NULL){
+		printf("ºÜ±§Ç¸ÎÞ·¨´ò¿ªÊý¾ÝÎļþ:( \n");
+	}
+	while(!feof(fp1)){//feof ±íʾÎļþÊÇ·ñ½áÊø 
+		if(	fread(&problem[t],sizeof(Paper),1,fp1)==1){//fread ¶ÁÈ¡Êý¾Ý  
+			t++;//¶ÁÈ¡ÌâÄ¿µÄÌâÊý 
+		}
+		
+	}		
+	fclose(fp1);//ºÜÖØÒªµÄ£¬²»ÄÜ©µô 
+} 
+void design(){//³öÌâϵͳ 
+	printf("ÇëÊäÈëÌâÄ¿£º\n");
+	gets(problem[t].title);
+	printf("ÇëÊäÈëAÑ¡Ï\n");
+	gets(problem[t].a);
+	printf("ÇëÊäÈëBÑ¡Ï\n");
+	gets(problem[t].b);
+	printf("ÇëÊäÈëCÑ¡Ï\n");
+	gets(problem[t].c);
+	printf("ÇëÊäÈëDÑ¡Ï\n");
+	gets(problem[t].d);
+	printf("ÇëÊäÈëÕýÈ·Ñ¡Ï\n");
+	problem[t].answer=getchar();
+	t++;
+} 
+void check(){//²é¿´Ìâ¿â 
+	int i;
+	printf("±¾Ìâ¿â¹²ÓÐ%dµÀÌâÄ¿\n",t);
+	for(i=0;i<t;i++){
+		printf("µÚ%dÌ⣺\n",i+1);
+		printf("ÌâÄ¿£º\n");
+		printf("%s\n", problem[i].title);
+		printf("  A:%s\n", problem[i].a);
+		printf("  B:%s\n", problem[i].b);
+		printf("  C:%s\n", problem[i].c);
+		printf("  D:%s\n", problem[i].d);
+		printf("ÕýÈ·´ð°¸Îª£º%c\n", problem[i].answer);
+	} 
+	putchar('\n');
+	system("pause");
+} 
+void del(){//ɾ³ýÌâÄ¿ 
+	int i;
+	char chi;
+	printf("ÇëÊäÈëÄúҪɾ³ýµÄÌâÄ¿µÄ±êºÅ£º\n");
+	scanf("%d",&i);
+	getchar(); 
+	i=i-1;
+	printf("ÄúҪɾ³ýµÄÌâÄ¿ÄÚÈÝÈçÏ£º\n");
+	printf("µÚ%dÌâ\n",i+1);
+	printf("ÌâÄ¿£º\n");
+	printf("%s\n", problem[i].title);
+	printf("  A:%s\n", problem[i].a);
+	printf("  B:%s\n", problem[i].b);
+	printf("  C:%s\n", problem[i].c);
+	printf("  D:%s\n", problem[i].d);
+	printf("ÕýÈ·´ð°¸Îª£º%c\n", problem[i].answer);
+	printf("\nÄúÈ·¶¨É¾³ý¸ÃÌâÄ¿Â𣿠 Y/N\n");
+	chi = getchar();
+	getchar();
+	if(chi=='N'||chi=='n'){
+		printf("¼´½«·µ»ØÉÏÒ»¼¶:(\n");
+		system("pause");
+		return; 
+	}
+	for(;i<t;i++){
+		problem[i]=problem[i+1];
+	}
+	t--;
+	printf("ɾ³ý³É¹¦£¬ËùÓÐÌâÄ¿±àºÅÒѾ­¸üР:)\n\n");
+	system("pause");
+} 
+void alter(){//ÐÞ¸ÄÌâÄ¿ 
+	int i;
+	char chi;
+	printf("\nÇëÊäÈëÄãÒªÐ޸ĵÄÌâÄ¿µÄ±àºÅ£º ");
+	scanf("%d", &i);
+	i = i - 1;
+	getchar();
+	printf("\nÄúÒªÐ޸ĵÄÌâÄ¿ÄÚÈÝÈçÏ£º \n");
+	printf("\nNo.%d\n", i + 1);
+	printf("Title:\n");
+	printf("%s\n", problem[i].title);
+	printf("  A:%s\n", problem[i].a);
+	printf("  B:%s\n", problem[i].b);
+	printf("  C:%s\n", problem[i].c);
+	printf("  D:%s\n", problem[i].d);
+	printf("ÕýÈ·´ð°¸Îª£º%c\n", problem[i].answer);
+	printf("\nÄúÈ·¶¨Ð޸ĸÃÌâÄ¿Â𣿠 Y/N\n");
+	chi = getchar();
+	getchar();
+	if(chi == 'N' || chi == 'n')
+	{
+		printf("¼´½«·µ»Øµ½²Ëµ¥Ò³Ãæ :)\n\n");
+		system("pause");
+		return;
+	}
+	printf("ÇëÊäÈëÌâÄ¿£º\n"); 
+	gets(problem[i].title);
+	printf("ÇëÊäÈëAÑ¡Ï\n");
+	gets(problem[i].a);
+	printf("ÇëÊäÈëBÑ¡Ï\n");
+	gets(problem[i].b);
+	printf("ÇëÊäÈëCÑ¡Ï\n");
+	gets(problem[i].c);
+	printf("ÇëÊäÈëDÑ¡Ï\n");
+	gets(problem[i].d);
+	printf("ÇëÊäÈëÕýÈ·Ñ¡Ï\n");
+	problem[i].answer = getchar();
+	printf("Ð޸ijɹ¦£¬¼´½«·µ»ØÉÏÒ»¼¶ :)\n\n");
+	system("pause"); 
+}
+float pinfen(char key,char ch){
+	if(key==ch){
+		return 10.0;
+	}
+	else 
+	return 0.0;
+}
+void chengji(){//ðÅÝÅÅÐò·¨ 
+	STU temp;
+	float sum=0;
+	printf("*ÐÕÃû   ѧºÅ    ³É¼¨\n");
+	for(int i=0;i<a;i++){
+		for(int j=i+1;j<a;j++){
+			if(stu[i].total<stu[j].total){
+				temp=stu[j];
+				stu[j]=stu[i];
+				stu[i]=temp;	
+			}
+		}
+	}	
+	for(int i=0;i<a;i++){
+		printf("%s       %03d     %.2f    \n ",stu[i].name,stu[i].num,stu[i].total);
+		sum+=stu[i].total;
+	}		
+	printf("****ƽ¾ù·ÖΪ%.2f\n",sum/a);	
+}
diff --git a/考试题库data2.txt b/考试题库data2.txt
new file mode 100644
index 0000000..764fbde
Binary files /dev/null and b/考试题库data2.txt differ