From 1fbf053f83038918715a66638c32f0d99a83e436 Mon Sep 17 00:00:00 2001
From: sadeem_albir <142955101+sadeem-albir@users.noreply.github.com>
Date: Sun, 24 Mar 2024 09:15:37 +0300
Subject: [PATCH] Fix readlines.c

At the test-part of the if-statement, please recall that we're checking for the *total* number of characters used in storage out of 10,000; we're not checking for the string-length of stored_lines added with the current line length being more than 10,000. Especially when neither is stored_lines itself being changed in the program nor is the length of the current line allowed to be more than 1,000 to begin with.
---
 chapter_5/exercise_5_07/readlines.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chapter_5/exercise_5_07/readlines.c b/chapter_5/exercise_5_07/readlines.c
index f62cbd0..7c88109 100644
--- a/chapter_5/exercise_5_07/readlines.c
+++ b/chapter_5/exercise_5_07/readlines.c
@@ -48,7 +48,7 @@ int readlines(char *line_ptr[], int max_nr_of_lines, char *stored_lines)
   {
     // Checking if the current # of lines exceeds the max # of lines that can be stored
     // Also checking if the max # of chars from the stored_lines buffer is not exceeded
-    if (nr_of_lines >= max_nr_of_lines || (strlen(stored_lines) + len) > MAXSTORE)
+    if (nr_of_lines >= max_nr_of_lines || stored_lines + MAXSTORE - p < len)
     {
       return -1;
     }