83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
#include "a_train.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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struct car* create_car(const char* target) {
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struct car* new_car = (struct car*)malloc(sizeof(struct car));
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if (new_car != NULL) {
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strncpy(new_car->value, target, SIZE - 1);
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new_car->value[SIZE - 1] = '\0';
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new_car->next = NULL;
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}
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return new_car;
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}
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struct car* add_car(struct car* first, const char* target) {
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struct car* new_car = create_car(target);
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if (new_car == NULL) {
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printf("Nedostatok pamäte pre nový vozeň!\n");
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return first;
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}
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if (first == NULL) {
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return new_car;
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}
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struct car* current = first;
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while (current->next != NULL) {
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current = current->next;
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}
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current->next = new_car;
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return first;
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}
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void print_train(struct car* first) {
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struct car* current = first;
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if (current == NULL) {
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printf("Vlak je prázdny.\n");
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return;
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}
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while (current != NULL) {
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printf("Vozeň cieľovej stanice: %s\n", current->value);
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current = current->next;
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}
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}
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void cancel_train(struct car* first) {
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struct car* current = first;
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struct car* next_car;
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while (current != NULL) {
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next_car = current->next;
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free(current);
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current = next_car;
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}
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}
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struct car* clear_train(struct car* first, const char* target) {
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struct car* current = first;
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struct car* prev = NULL;
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while (current != NULL) {
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if (strcmp(current->value, target) == 0) {
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if (prev == NULL) {
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first = current->next;
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} else {
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prev->next = current->next;
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}
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struct car* temp = current;
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current = current->next;
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free(temp);
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} else {
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prev = current;
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current = current->next;
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}
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}
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return first;
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}
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