From aa58f99045c7a34fd7ee0fe7c25037280f481fc6 Mon Sep 17 00:00:00 2001
From: Jakob Stornig <jakob.stornig2003@gmail.com>
Date: Mon, 25 Sep 2023 11:11:07 +0200
Subject: [PATCH] minor changes

---
 image.c | 4 ++++
 main.c  | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/image.c b/image.c
index 3fcbd1e..f52fa2c 100644
--- a/image.c
+++ b/image.c
@@ -26,6 +26,10 @@ void read_until_space_or_newline(char * buff, int maxCount, FILE * fptr){
 
 Image * load_pgm_image(char * image_file_string){
     FILE * fptr = fopen(image_file_string, "r");
+    if(!fptr){
+        printf("could not open image file. exit\n");
+        exit(1);
+    }
     Image *image = malloc(sizeof(Image));
     image->label = -1;
 
diff --git a/main.c b/main.c
index 1d17aa5..f4c966e 100644
--- a/main.c
+++ b/main.c
@@ -23,7 +23,7 @@ void parsingErrorTrain(){
 
 void parsingErrorDetect(){
     printf("invalid syntax\n");
-    printf("Syntax: c_net predict_demo [path_to_network] [image_file]");
+    printf("Syntax: c_net predict_demo [path_to_network] [image_file]\n");
 }
 
 void predict_demo(int argc, char** arguments){