From 210c9f7357b9f1b2250fc02ab8c22015ba089020 Mon Sep 17 00:00:00 2001
From: Alexander Tarasov <alex.tarasov@sentry.io>
Date: Fri, 1 Dec 2023 23:33:01 +0100
Subject: [PATCH] test if file exists

---
 01/01.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/01/01.c b/01/01.c
index a058f87..9e8cf30 100644
--- a/01/01.c
+++ b/01/01.c
@@ -92,6 +92,11 @@ int main(int argc, const char* argv[]) {
   }
 
   FILE * f = fopen(argv[1], "r");
+  if (f == NULL) {
+    printf("Error opening file: %s\n", argv[1]);
+    return 2;
+  }
+
   char s[100];
 
   int result = 0;