diff --git a/README.md b/README.md
index eb2209e..dc2a195 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,23 @@
-# enrollment_management
-
+步骤1
+int main()
+{
+    char controll;
+    char arr1[] = { "                              1.Input" };
+    char arr2[] = { "                              2.Output" };
+    char arr3[] = { "                              3.Order" };
+    char arr4[] = { "                              4.Quit" };
+    char arr5[] = { "You are trying to Input info" };
+    char arr6[] = { "You are trying to Output info" };
+    char arr7[] = { "You are trying to Make things ordered" };
+    char arr8[] = { "You are about to Quit" };
+    printf("%s\n%s\n%s\n%s\n", arr1, arr2, arr3, arr4);
+    scanf_s("%c", &controll);
+    switch (controll) {
+    case 'i':printf("\n%s\n", arr5); break;
+    case 'o':printf("\n%s\n", arr6); break;
+    case 'm':printf("\n%s\n", arr7); break;
+    case 'q':printf("\n%s\n", arr8); break;
+        default:printf("Wrong input");
+    }
+   
+}