From faa6da3e9447e477681b650d1e38ab5a61298f71 Mon Sep 17 00:00:00 2001
From: Filip Kolev <fil.kolev@gmail.com>
Date: Sun, 24 Nov 2024 20:41:40 +0000
Subject: [PATCH] Use perror() in case getifaddrs() call fails

According to https://man7.org/linux/man-pages/man3/getifaddrs.3.html
getifaddrs() returns -1 on error and sets errno. Use the perror() function to
provide a more informative error message in such cases.
---
 chap01/unix_list.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chap01/unix_list.c b/chap01/unix_list.c
index eeb5910..03213a8 100644
--- a/chap01/unix_list.c
+++ b/chap01/unix_list.c
@@ -34,7 +34,7 @@ int main() {
     struct ifaddrs *addresses;
 
     if (getifaddrs(&addresses) == -1) {
-        printf("getifaddrs call failed\n");
+        perror("getifaddrs call failed");
         return -1;
     }