100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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typedef struct Node {
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char text[100];
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struct Node* yes;
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struct Node* no;
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} Node;
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// Function to create a new node
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Node* createNode(char* text) {
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Node* node = (Node*)malloc(sizeof(Node));
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if (!node) {
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fprintf(stderr, "Chyba pri alokacii pamate.\n");
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exit(1);
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}
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strcpy(node->text, text);
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node->yes = NULL;
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node->no = NULL;
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return node;
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}
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// Recursive function to read and build the tree
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Node* readTree(int* count) {
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char line[100];
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if (!fgets(line, sizeof(line), stdin) || strcmp(line, "\n") == 0) {
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return NULL;
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}
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// Remove newline character from line
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line[strcspn(line, "\n")] = 0;
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// Check if the line is an answer (starts with '*')
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if (line[0] == '*') {
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(*count)++;
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return createNode(line + 1); // Skip the '*' character
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}
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// If it's a question, create a node and recursively read its children
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Node* node = createNode(line);
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node->yes = readTree(count);
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node->no = readTree(count);
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return node;
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}
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// Function to interact with the user and navigate the tree
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void queryUser(Node* node) {
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if (node == NULL) return;
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if (node->yes == NULL && node->no == NULL) {
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printf("Expert z bufetu to vie. Je to: %s\n", node->text);
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printf("Koniec\n");
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return;
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}
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// Print question and get user's answer
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printf("%s\n", node->text);
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printf("Odpovedajte 'a' pre prvu moznost alebo 'n' pre druhu moznost.\n");
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char answer;
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if (scanf(" %c", &answer) != 1) {
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printf("Nespravny vstup.\n");
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return;
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}
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if (answer == 'a') {
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queryUser(node->yes);
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} else if (answer == 'n') {
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queryUser(node->no);
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} else {
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printf("Nespravny vstup.\n");
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}
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}
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// Function to free the tree
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void freeTree(Node* node) {
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if (node == NULL) return;
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freeTree(node->yes);
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freeTree(node->no);
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free(node);
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}
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int main() {
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int count = 0;
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Node* root = readTree(&count);
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if (root == NULL) {
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printf("Chyba pri nacitani baze pravidiel.\n");
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return 1;
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}
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printf("Pozna %d druhov ovocia a zeleniny.\n", count);
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queryUser(root);
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freeTree(root);
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return 0;
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}
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