From 24ab3be1c32312d590dfaae114a80a559bb7331a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tom=C3=A1=C5=A1=20Vl=C4=8Dek?= <tomas.vlcek@student.tuke.sk>
Date: Wed, 15 Apr 2026 10:26:15 +0000
Subject: [PATCH] Aktualizovat du5/program.c

---
 du5/program.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/du5/program.c b/du5/program.c
index 5c2cd2d..6579206 100644
--- a/du5/program.c
+++ b/du5/program.c
@@ -103,6 +103,7 @@ void goThroughTheTree(int rootIndex)
 int main() 
 {
     char buffer[SIZE];
+    bool isErr; //pomocna error premena
 
     //null-terminovanie
     buffer[0] = '\0';
@@ -110,9 +111,11 @@ int main()
     // citanie vstupu
     while (fgets(buffer, SIZE, stdin)) 
     {
-        //prestane citat vstup, ak je NEPLATNY
-        if (strcmp(buffer, "\n") == 0)
+        //prestane citat vstup, ak je NEPLATNY (rovna sa Newline symbolu, resp. prazdny riadok) 
+        //ALEBO ak sa nenacital riadok vobec (buffer je uplne prazdny, (resp prvy prvok je null terminator))
+        if (strcmp(buffer, "\n") == 0 ||  buffer[0] = '\0')
         {
+            isErr = true;
             break;
         }
         //nahradi NewLine symbol za null terminator (Newline sa prida naspat potom na konci programu)
@@ -132,12 +135,17 @@ int main()
     }
 
     printf("Expert z bufetu to vie.\n");
-    printf("Pozna %d druhov ovocia a zeleniny.\n", answerCount);
-    printf("Odpovedajte 'a' pre prvu moznost alebo 'n' pre druhu moznost.\n");
-
+    if (!isErr) //vypise vysledky/statistiky, AK nebola chyba na zaciatku citania vstupu
+    {
+        printf("Pozna %d druhov ovocia a zeleniny.\n", answerCount);
+        printf("Odpovedajte 'a' pre prvu moznost alebo 'n' pre druhu moznost.\n");
+    }
+    else
+    {
+        printf("Chybna␣databaza");
+    }
+    
     goThroughTheTree(root);
 
     return 0;
-}
-
-  
\ No newline at end of file
+}
\ No newline at end of file