76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
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#include "a_train.h"
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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struct car* add_car(struct car* first, const char* target) {
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struct car* new_car = (struct car*)malloc(sizeof(struct car));
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if (!new_car) {
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return first;
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}
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strncpy(new_car->value, target, SIZE);
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new_car->value[SIZE - 1] = '\0';
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new_car->next = NULL;
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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 prazdny.\n");
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return;
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}
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while (current != NULL) {
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printf("%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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while (current != NULL) {
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struct car* next = current->next;
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free(current);
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current = next;
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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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struct car* to_delete = current;
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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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current = current->next;
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free(to_delete);
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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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