From 398cc5eac4d7c099903399e3829939cc6e1ad142 Mon Sep 17 00:00:00 2001
From: "rick.chan" <chenyang@autoai.com>
Date: Mon, 12 Apr 2021 09:06:48 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=20perror=20=E8=AF=B4?=
 =?UTF-8?q?=E6=98=8E.?=
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Signed-off-by: rick.chan <chenyang@autoai.com>
---
 .../C/C_Standard_Library/C_标准库实用说明.md  | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/Software/Development/Language/C/C_Standard_Library/C_标准库实用说明.md b/Software/Development/Language/C/C_Standard_Library/C_标准库实用说明.md
index 1c2647a..99b87a2 100644
--- a/Software/Development/Language/C/C_Standard_Library/C_标准库实用说明.md
+++ b/Software/Development/Language/C/C_Standard_Library/C_标准库实用说明.md
@@ -8,3 +8,31 @@
  */
 #include <stddef.h>
 ```
+
+## 2.stdlib 库
+
+## 2.1.perror
+
+**头文件：**
+
+```cpp
+#include <stdlib.h>
+```
+
+**函数原型：**
+
+```cpp
+void perror(const char *s);
+```
+
+**说明：**
+
+The perror() function produces a message on standard error describing the last error encountered during a call to a system or library function.
+
+**参数：**
+
+s：First (if s is not NULL and *s is not a null byte ('\0')), the argument string s is printed, followed by a colon and a blank.  Then an error message corresponding to the current value of errno and a new-line. To be of most use, the argument string should include the name of the function that incurred the error.
+
+**返回值：**
+
+无。