#include "a_train.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct car* add_car(struct car* first,const char* target) {
    struct car* newcar = calloc(1,sizeof(struct car));
    newcar->next = NULL;
    strcpy(newcar->value, target);

    if(first == NULL){
        return newcar;
    }

    struct car* this = first;
    while(this->next != NULL){
        this = this->next;
    }
    this->next = newcar;

    return first;
}

void print_train(struct car* first) {
    while(first != NULL){
        printf("%s\n", first->value);
        first = first->next;
    }
}

void cancel_train(struct car* first) {
}


struct car* clear_train(struct car* first, const char* target) {
	return NULL;
}