Contopire benzi

// main.c

#include "functii.h"

int main(){
    int n, m;
    NOD *banda1 = NULL, *banda2 = NULL, *banda_contopita = NULL;
    scanf("%d%d", &n, &m);

    banda1 = populare_lista(banda1, n);
    banda2 = populare_lista(banda2, m);


    banda_contopita = contopire_benzi(banda1, banda2, banda_contopita);

    afisare(banda_contopita);
}

// functii.h

#ifndef FUNCTII_H
#define FUNCTII_H

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

typedef struct NOD{
    char nr_inmatriculare[10];
    struct NOD *next;
}NOD;

NOD *creare_nod(char *);
NOD *populare_lista(NOD *, int);
NOD *contopire_benzi(NOD *, NOD *, NOD *);
void afisare(NOD *);


#endif

// functii.c

#include "functii.h"

NOD *creare_nod(char nr[]){
    NOD *new_node = malloc(sizeof(NOD));
    strcpy(new_node -> nr_inmatriculare, nr);
    new_node -> next = NULL;
    return new_node;
}

NOD *populare_lista(NOD *head, int n){

    char nr[10];
    scanf("%s", nr);
    head = creare_nod(nr);

    NOD *nod = head, *new_node = NULL;

    for(int i=1; i<n; i++){
        scanf("%s", nr);
        new_node = creare_nod(nr);
        nod->next = new_node;
        nod = nod->next;
    }

    return head;
}

NOD *contopire_benzi(NOD *b1, NOD *b2, NOD *head){
    NOD *nod1 = b1, *nod2 = b2, *nod, *new_node;

    head = creare_nod(nod2->nr_inmatriculare);
    nod2 = nod2 -> next;
    nod = head;

    for(int i = 0; nod1 && nod2; i++)
        if(i%2){ // banda 2
            new_node = creare_nod(nod2->nr_inmatriculare);
            nod2 = nod2->next;
            nod -> next = new_node;
            nod = nod -> next;
        }

        else{ // banda 1
            new_node = creare_nod(nod1->nr_inmatriculare);
            nod1 = nod1->next;
            nod -> next = new_node;
            nod = nod -> next;
        }

    while(nod1){
        new_node = creare_nod(nod1->nr_inmatriculare);
        nod1 = nod1->next;
        nod -> next = new_node;
        nod = nod -> next;
    }
    while(nod2){
        new_node = creare_nod(nod2->nr_inmatriculare);
        nod2 = nod2->next;
        nod -> next = new_node;
        nod = nod -> next;
    }

    return head;
}

void afisare(NOD *head){
    NOD *nod = head;

    for(; nod; nod = nod -> next)
        printf("%s\n", nod->nr_inmatriculare);
}