diff --git a/选课系统2.c b/选课系统2.c
new file mode 100644
index 0000000..0e81a7b
--- /dev/null
+++ b/选课系统2.c
@@ -0,0 +1,106 @@
+#include<stdio.h> 
+#include<stdlib.h>
+void Mangers()
+{
+int n,w=1,flag=0,i=3;
+char s[8];
+char password[7]="1";
+do
+{
+printf("\n\nEnter password:");
+scanf("%s",s);
+if(!strcmp(s,password))              
+{
+flag=1;
+break;
+}
+else
+{
+printf("\n\nError! You only have %d times! Enter again:\n",i-1);
+i--;
+}
+}
+while(i>0);
+if(!flag)
+{
+printf("you have Enter 3 times!");      
+exit(0);                                
+}
+do
+{
+system("cls");
+printf("\n\n\t\t*********************¹ÜÀíÔ±²Ëµ¥***********************\n\n");
+printf("\t\t\t\t1---ä¯ÀÀ¿Î³Ì\n");
+printf("\t\t\t\t2---²éѯ¿Î³Ì\n");
+printf("\t\t\t\t3---Ìí¼Ó¿Î³Ì\n");
+printf("\t\t\t\t4---ɾ³ý¿Î³Ì\n");
+printf("\t\t\t\t5---·µ»ØÖ÷²Ëµ¥");
+printf("\n\n\t\t******************************************************\n");
+printf("Chiose your number(1-5):[ ]\b\b");
+scanf("%d",&n);
+switch(n)
+{
+case 1:prin();break;
+case 2:search();break;
+case 3:insert();savefile();break;
+case 4:del();savefile();break;
+case 5:return;
+default:;
+}
+}
+while(w==1);
+}
+void Students()
+{
+int n,w=1;
+do
+{
+system("cls");
+puts("\n\n\t\t*********************ѧÉú²Ëµ¥***********************\n\n");
+puts("\t\t\t\t1---ä¯ÀÀËùÓпγÌ\n");
+puts("\t\t\t\t2---²éѯ¿Î³ÌÐÅÏ¢\n");
+puts("\t\t\t\t3---Ñ¡ÔñÑ¡Ð޿γÌ\n");
+puts("\t\t\t\t4---ä¯ÀÀÎÒÑ¡Ð޵ĿγÌ\n");
+puts("\t\t\t\t5---ɾ³ý´íÑ¡¿Î³Ì\n");
+puts("\t\t\t\t6---·µ»ØÖ÷²Ëµ¥");
+puts("\n\n\t\t****************************************************\n");
+printf("Chiose your number(1-6):[ ]\b\b");
+scanf("%d",&n);
+switch(n)
+{
+case 1:prin();break;
+case 2:search();break;
+case 3:choose();break;
+case 4:prin1();break;
+case 5:del();savefile1();break;
+case 6:return;
+default:;
+}
+}
+while(w==1);
+}
+int  main()
+{
+int n,w=1;
+do
+{
+system("cls");
+puts("\n\n\t\t*********************MENU***********************\n\n");
+puts("\t\t\t\t1.ÒÔ¹ÜÀíÔ±Éí·ÝµÇ¼(password 1)\n");
+puts("\t\t\t\t2.ÒÔѧÉúÉí·ÝµÇ¼\n");
+puts("\t\t\t\t3.Í˳ö");
+puts("\n\n\t\t************************************************\n");
+printf("Chiose your number(1-3):[ ]\b\b");
+scanf("%d",&n);
+switch(n)
+{
+case 1:Mangers() ;break;
+case 2:Students();break;
+case 3:w=0;break;
+default:;
+}
+}
+while(w==1);
+return 0;
+}
+