Update cv7/program.c
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@ -27,7 +27,7 @@ void free_tree(Node *root) {
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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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if (root->yes == NULL && root->no == NULL) return 1;
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return count_answers(root->yes) + count_answers(root->no);
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}
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@ -38,11 +38,11 @@ Node* parse_rules() {
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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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// Trim newline
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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 (strlen(line) == 0) break;
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if (line[0] == '*') { // This is an answer
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if (line[0] == '*') {
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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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@ -50,7 +50,7 @@ Node* parse_rules() {
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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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} else {
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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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@ -76,27 +76,19 @@ void ask_question(Node *node) {
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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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printf("%s\n", node->content);
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if (node->yes && node->yes->content[0] != '*') {
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printf("Odpovedajte 'a' pre prvu moznost alebo 'n' pre druhu moznost.\n");
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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 == 'n') {
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if (response == 'a' && node->yes) {
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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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} else if (response == 'n' && node->no) {
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ask_question(node->no);
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break;
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} else {
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@ -107,7 +99,6 @@ void ask_question(Node *node) {
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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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@ -119,9 +110,11 @@ int main() {
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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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if (root) {
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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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}
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free_tree(root);
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return 0;
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