From b3e9e62599532050fc776c5e8f076915b56c2235 Mon Sep 17 00:00:00 2001
From: David Faulkner <d@davo.co>
Date: Fri, 7 Aug 2026 23:40:47 -0500
Subject: Import official C23 code examples for Modern C (Jens Gustedt, 2024)

- Add official C source files, Makefile, c23-fallback.h, and LICENSE
- Update README.md with study mirror notice
---
 cat.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 cat.c

(limited to 'cat.c')

diff --git a/cat.c b/cat.c
new file mode 100644
index 0000000..9baadb5
--- /dev/null
+++ b/cat.c
@@ -0,0 +1,26 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+
+enum { buf_max = 32, };
+
+int main(int argc, char* argv[argc+1]) {
+  int ret = EXIT_FAILURE;
+  char buffer[buf_max] = { };
+  for (int i = 1; i < argc; ++i) {        // Processes args
+    FILE* instream = fopen(argv[i], "r"); // as filenames
+    if (instream) {
+      while (fgets(buffer, buf_max, instream)) {
+        fputs(buffer, stdout);
+      }
+      fclose(instream);
+      ret = EXIT_SUCCESS;
+    } else {
+      /* Provides some error diagnostic. */
+      fprintf(stderr, "Could not open %s: ", argv[i]);
+      perror(0);
+      errno = 0;                       // Resets the error code
+    }
+  }
+  return ret;
+}
-- 
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