get the errno value

2026-02-08 14:59:34 +00:00 · 2026-02-08 14:59:34 +00:00 · 78ea32b3d9
commit 78ea32b3d9
parent cf443e62b5
2 changed files with 3 additions and 2 deletions
--- a/src/TXTWKR01.c
+++ b/src/TXTWKR01.c
@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <errno.h>

 #define BUFFER_SIZE 256

@ -18,7 +19,7 @@ int main()
    if (fp == NULL)
    {
        perror("fopen failed.");
-        printf("errno = %d\n", errno);
+        printf("errno = %d\n", __errno());
        return 1;
    }