diff --git a/课程设计.exe b/课程设计.exe
deleted file mode 100644
index 22ef041..0000000
Binary files a/课程设计.exe and /dev/null differ
diff --git a/课程设计.c b/课程设计2.c
similarity index 65%
rename from 课程设计.c
rename to 课程设计2.c
index 8e92d9d..c551eee 100644
--- a/课程设计.c
+++ b/课程设计2.c
@@ -5,10 +5,10 @@
 #include<stdlib.h>
 #include<time.h>
 #include<dos.h>
-#include<conio.h> 
+#include<conio.h>
 int main()
 {
-    system("color f4");  
+    system("color f4");
     struct BOOK
 {
 	char title[20];
@@ -59,49 +59,78 @@ int main()
     strcpy( book[4].time, "2011Äê6ÔÂ");
 	book[4].price=39.50;
 	strcpy( book[4].locate, "¶þÂ¥302");
-	 
 
 
-	char title[20],author[20];
-	char *str=title;
-	char *ptr=author;
-	int i;
-		char password[100]; 
-		
-		
-		
-		{	
-			int num=0;
-			
-			printf("***************»¶Ó­À´µ½ÉîÒ¹Êéµê´æ»õÇåµ¥¹ÜÀíϵͳµÇ¼½çÃæ***************\n"); 
-			printf("               ÇëÊäÈëÃÜÂë");
-		
-			while(1)													//µÇ¼ϵͳÃÜÂë 
+
+
+		    struct user
+		    {
+		    	char user_name[100];
+		    	char user_pass[100];
+			}stu[2]={{"xiaocong001","123456"},{"zhuzhu002","123456"}};
+			int num1=0;
+			int num2=0;
+			printf("***************»¶Ó­À´µ½ÉîÒ¹Êéµê´æ»õÇåµ¥¹ÜÀíϵͳµÇ¼½çÃæ***************\n");                  //µÇ¼ϵͳ
+			while(1)
+			{
+			    printf("\t\tÇëÊäÈëÄúµÄÓû§Ãû£º");
+				char u[100];
+
+				scanf("%s",u);
+
+				if(strcmp(stu[0].user_name,u)==0||strcmp(stu[1].user_name,u)==0)
+				{
+					break;
+				}
+
+				else{
+					printf("²»´æÔÚ´ËÓû§£¡ÇëÖØÐÂÊäÈ룡\n");
+					num1++;
+					if(num1==3)
+					{
+					printf("\n\t\tºÜ±§Ç¸£¬ÄúûÓÐȨÏÞ½øÈëϵͳ£¡\n");
+					exit(0); }
+				}
+			}
+			system("cls");
+			printf("***************»¶Ó­À´µ½ÉîÒ¹Êéµê´æ»õÇåµ¥¹ÜÀíϵͳµÇ¼½çÃæ***************\n");
+			printf("\t\tÇëÊäÈëÃÜÂ룺");
+			while(1)
 			{
-			scanf("%s",password);
-			if(strcmp(password,"123456")==0)
+				char p[100];
+			scanf("%s",p);
+			if(strcmp(stu[0].user_pass,p)==0)
 			{
 				printf("   µÇ¼³É¹¦\n");
 				break;
 			}else
 			{
 				printf("               ÃÜÂë´íÎó£¬ÇëÖØÐÂÊäÈë");
-				num++;
-				if(num==3)
+				num2++;
+				if(num2==3)
 				{
 					printf("ÃÜÂëÊäÈë´íÎ󳬹ýÈý´Î£¬ÏµÍ³¼´½«¹Ø±Õ");
-					exit(0); 
+					exit(0);
 				}
 		}
 			}
-			system("cls");                //Ë¢ÆÁ 
-			
+			system("cls");                //Ë¢ÆÁ
+            system("color e5");
+
+
+
+
+	char t[20],a[20];
+	int i;
+
 	printf("ÇëÊäÈëÄúҪѰÕÒµÄÊéÃûºÍ×÷Õß\n") ;
-	scanf("%s%s",str,ptr);
+	scanf("%s%s",&t,&a);
 		for(i=0;i<5;i++)
 		{
-			if(*str==*book[i].title&&*ptr==*book[i].author)
+			if((strcmp(t,book[i].title)==0))
 			{
+			    if((strcmp(a,book[i].author)==0))
+                {
                     printf("The book is in the list.");
                     printf( "ÊéÃû :   %s\n", book[i].title);
                     printf( "×÷Õß :  %s\n", book[i].author);
@@ -110,24 +139,21 @@ int main()
                     printf("¿â´æ\n");
                     printf("ÇëÊäÈëËùÐèÊýÁ¿:");
                     int n;
-                    scanf("%d",n);
+                    scanf("%d",&n);
                     if(n>(book[i].base))
                     {
                         printf("ËùÐèÊýÁ¿²»ÔÚ¿â´æ·¶Î§ÄÚ");
+                    }
+                    else
+                    {
+                        book[i].base=book[i].base - n;
+                        printf("ÒÑÑ¡¶¨%d ±¾ %s\n",n,book[i].title);
                     }
 			}
 		}
+		}
 
 return 0;
 }
-} 
 
-/*void printBook( struct BOOK *book)
-{
-   printf( "Book title :   %s\n", book->title);
-   printf( "Book author :  %s\n", book->author);
-   printf( "Book publice : %s\n", book->publice);
-   printf( "Book time :    %s\n", book->time);
-}
-*/
 
diff --git a/课程设计2.exe b/课程设计2.exe
new file mode 100644
index 0000000..f7fa507
Binary files /dev/null and b/课程设计2.exe differ