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


/*int main(void){
    printf("Zadajte zoznam cieľových staníc a počet cestujúcich.\n");
    printf("Zoznam zakončite prázdnym riadkom.\n");

    add_car;
    return 0;
}*/

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

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

void cancel_train(struct car* first) {

}

struct car* clear_train(struct car* first, const char* target) {
    struct car* prev = first;
 //Už sme si istí, že  prev a prev->next nie sú NULL
    while (prev->next->next != NULL){
    prev = prev->next;
    }
    struct car* third = prev->next->next;
    free(prev->next);
    prev->next = third;
    return first;
    }