129 lines
3.0 KiB
C
129 lines
3.0 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 *content;
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struct Node *yes;
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struct Node *no;
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} Node;
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Node* create_node(const char *content) {
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Node *new_node = (Node*)malloc(sizeof(Node));
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new_node->content = strdup(content);
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new_node->yes = NULL;
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new_node->no = NULL;
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return new_node;
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}
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void free_tree(Node *root) {
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if (root) {
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free(root->content);
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free_tree(root->yes);
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free_tree(root->no);
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free(root);
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}
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}
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int count_answers(Node *root) {
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if (!root) return 0;
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if (root->yes == NULL && root->no == NULL) return 1; // It's an answer
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return count_answers(root->yes) + count_answers(root->no);
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}
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Node* parse_rules() {
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char line[256];
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Node *root = NULL, *current = NULL;
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Node *stack[100];
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int stack_top = -1;
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while (fgets(line, sizeof(line), stdin)) {
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// Trim newline and spaces
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line[strcspn(line, "\n")] = 0;
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if (strlen(line) == 0) break; // End of rules
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if (line[0] == '*') { // This is an answer
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Node *answer = create_node(line + 1);
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if (stack_top >= 0) {
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if (stack[stack_top]->yes == NULL)
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stack[stack_top]->yes = answer;
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else
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stack[stack_top]->no = answer;
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}
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} else { // This is a question
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Node *question = create_node(line);
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if (stack_top >= 0) {
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if (stack[stack_top]->yes == NULL)
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stack[stack_top]->yes = question;
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else
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stack[stack_top]->no = question;
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}
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stack[++stack_top] = question;
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}
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}
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if (stack_top >= 0) {
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root = stack[0];
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}
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return root;
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}
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void ask_question(Node *node) {
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if (!node) return;
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if (node->yes == NULL && node->no == NULL) {
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printf("Koniec\n");
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return;
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}
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// Print the current question
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printf("%s?\n", node->content);
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if (node->yes) {
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printf("* %s\n", node->yes->content);
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}
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if (node->no) {
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printf("* %s\n", node->no->content);
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}
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// Prompt for input
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printf("\n");
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printf("n\n");
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char response;
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while (1) {
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response = getchar();
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getchar(); // To capture newline
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if (response == 'a') {
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ask_question(node->yes);
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break;
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} else if (response == 'n') {
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ask_question(node->no);
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break;
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} else {
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printf("Neplatna odpoved, koniec.\n");
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break;
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}
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}
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}
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int main() {
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// General system information only once
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printf("Expert z bufetu to vie.\n");
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Node *root = parse_rules();
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if (!root) {
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printf("Chybne pravidla.\n");
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return 1;
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}
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int answer_count = count_answers(root);
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printf("Pozna %d druhov ovocia a zeleniny.\n", answer_count);
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// Ask the first question
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printf("Odpovedajte 'a' pre prvu moznost alebo 'n' pre druhu moznost.\n");
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ask_question(root);
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free_tree(root);
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return 0;
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}
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