diff --git a/README.md b/README.md
index e25ac18..bd68f9c 100644
--- a/README.md
+++ b/README.md
@@ -351,4 +351,11 @@ Step 2.12: if c == CMD_QUIT then 退出
 Step 1: 读取文件
 Step 2: 显示图表
 
-![](pictures/make_chart.drawio.svg)
\ No newline at end of file
+![](pictures/make_chart.drawio.svg)
+
+
+#### confirm
+
+Step 1: 输出 确定要退出吗
+Step 2: if 确认 then 退出
+