diff --git a/README.md b/README.md
index cedaa8d..2311a48 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,45 @@
 # Student_registration_management_system
+//步骤1//
+#include <stdio.h>
+
+int main() {
+    char choice;
+
+    while (1) {
+        // 显示菜单
+        printf("\n                              1. Input\n");
+        printf("                              2. Output\n");
+        printf("                              3. Order\n");
+        printf("                              4. Quit\n");
+        printf("Please enter your choice: ");
+
+        // 读取用户输入
+        scanf(" %c", &choice);
+
+        // 根据用户选择执行相应操作
+        switch (choice) {
+            case 'i':
+                printf("You are trying to Input info\n");
+                // 在这里执行输入操作的代码
+                break;
+            case 'o':
+                printf("You are trying to Output info\n");
+                // 在这里执行输出操作的代码
+                break;
+            case 'm':
+                printf("You are trying to Make things ordered\n");
+                // 在这里执行排序操作的代码
+                break;
+            case 'q':
+                printf("You are about to Quit\n");
+                // 在这里执行退出操作的代码
+                return 0;
+            default:
+                printf("Wrong input\n");
+                break;
+        }
+    }
+
+    return 0;
+}