From 201846cfd9dbe752fb3ec079d69d5fb1177e51a8 Mon Sep 17 00:00:00 2001
From: Marat Izmailov <marat.izmailov@student.tuke.sk>
Date: Wed, 13 Nov 2024 22:48:03 +0000
Subject: [PATCH] Update cv7/program.c

---
 cv7/program.c | 27 ++++++++++++++-------------
 1 file changed, 14 insertions(+), 13 deletions(-)

diff --git a/cv7/program.c b/cv7/program.c
index 0a39228..6d7b9d8 100644
--- a/cv7/program.c
+++ b/cv7/program.c
@@ -11,6 +11,10 @@ typedef struct Node {
 // Function to create a new node
 Node* createNode(char* text) {
     Node* node = (Node*)malloc(sizeof(Node));
+    if (!node) {
+        fprintf(stderr, "Chyba pri alokacii pamate.\n");
+        exit(1);
+    }
     strcpy(node->text, text);
     node->yes = NULL;
     node->no = NULL;
@@ -18,10 +22,10 @@ Node* createNode(char* text) {
 }
 
 // Recursive function to read and build the tree
-Node* readTree(FILE* file, int* count) {
+Node* readTree(int* count) {
     char line[100];
 
-    if (!fgets(line, sizeof(line), file) || strcmp(line, "\n") == 0) {
+    if (!fgets(line, sizeof(line), stdin) || strcmp(line, "\n") == 0) {
         return NULL;
     }
 
@@ -36,8 +40,8 @@ Node* readTree(FILE* file, int* count) {
 
     // If it's a question, create a node and recursively read its children
     Node* node = createNode(line);
-    node->yes = readTree(file, count);
-    node->no = readTree(file, count);
+    node->yes = readTree(count);
+    node->no = readTree(count);
     return node;
 }
 
@@ -47,6 +51,7 @@ void queryUser(Node* node) {
 
     if (node->yes == NULL && node->no == NULL) {
         printf("Expert z bufetu to vie. Je to: %s\n", node->text);
+        printf("Koniec\n");
         return;
     }
 
@@ -55,7 +60,10 @@ void queryUser(Node* node) {
     printf("Odpovedajte 'a' pre prvu moznost alebo 'n' pre druhu moznost.\n");
 
     char answer;
-    scanf(" %c", &answer);
+    if (scanf(" %c", &answer) != 1) {
+        printf("Nespravny vstup.\n");
+        return;
+    }
 
     if (answer == 'a') {
         queryUser(node->yes);
@@ -75,15 +83,8 @@ void freeTree(Node* node) {
 }
 
 int main() {
-    FILE* file = fopen("baza.txt", "r");
-    if (!file) {
-        printf("Chyba pri nacitani suboru.\n");
-        return 1;
-    }
-
     int count = 0;
-    Node* root = readTree(file, &count);
-    fclose(file);
+    Node* root = readTree(&count);
 
     if (root == NULL) {
         printf("Chyba pri nacitani baze pravidiel.\n");