From 23622a79ec6fcf0ac21f014a5baf7f960202b1ac Mon Sep 17 00:00:00 2001
From: "Christoph J. Scherr" <Christ.Scherr@newtec.de>
Date: Mon, 18 Sep 2023 14:58:57 +0200
Subject: [PATCH] readfile with cli arg

---
 src/readfile.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/readfile.c b/src/readfile.c
index fb5f773..ad56c6f 100644
--- a/src/readfile.c
+++ b/src/readfile.c
@@ -1,9 +1,13 @@
 #include <stdlib.h>
 #include <stdio.h>
  
-int main(void)
+int main(int argc, char** argv)
 {
-   char filename[] = "file.txt";
+   if (argc != 2) {
+      printf("usage: %s FILE", argv[0]);
+      exit(1);
+   }
+   char* filename = argv[1];
    char buf[2];
    FILE *fp;