From fad28509e7463082a508b761c797773538df7d27 Mon Sep 17 00:00:00 2001
From: Stefan Zabka <zabkaste@hu-berlin.de>
Date: Thu, 11 Jun 2020 01:00:32 +0200
Subject: First ideas

---
 04_exercise/quicksort.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to '04_exercise/quicksort.c')

diff --git a/04_exercise/quicksort.c b/04_exercise/quicksort.c
index 88a47a2..f912f2b 100644
--- a/04_exercise/quicksort.c
+++ b/04_exercise/quicksort.c
@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <time.h>
+#include <string.h>
 
 static size_t partition(int v[], size_t len);
 
@@ -87,9 +88,9 @@ int main(int argc, const char *argv[]) {
 	/* read the length of the list from the command line */
 	size_t list_len = 30000000;
 	if (argc >= 2) {
-		long arg = atol(argv[1]);
+		long arg = strtol(argv[1], (char **)&argv[strlen(argv[1])], 10);
 		if (arg > 0)
-			list_len = arg;
+			list_len = (size_t)arg;
 	}
 	
 	/* generate a list with random integers */
-- 
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