From 90106ba794458787db91b8c85f5f8740831f14bd Mon Sep 17 00:00:00 2001
From: Calvin Morrison <mutantturkey@gmail.com>
Date: Wed, 2 Oct 2013 22:53:12 -0400
Subject: provide errno error details

---
 kmer_frequency_per_sequence.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'kmer_frequency_per_sequence.c')

diff --git a/kmer_frequency_per_sequence.c b/kmer_frequency_per_sequence.c
index 9cda533..aa18dd6 100644
--- a/kmer_frequency_per_sequence.c
+++ b/kmer_frequency_per_sequence.c
@@ -1,7 +1,9 @@
 // Copyright 2013 Calvin Morrison
+#include <errno.h>
 #include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 #include "kmer_utils.h"
 
@@ -22,7 +24,7 @@ int main(int argc, char **argv) {
 
   FILE *fh = fopen(argv[1], "r" );
   if(fh == NULL) {
-    fprintf(stderr, "Couldn't open: %s\n", argv[1]);
+    fprintf(stderr, "Error opening %s - %s\n", argv[1], strerror(errno));
     exit(EXIT_FAILURE);
   }
 
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