Andrey_LL

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

///////////////
struct Student
{
    int              ege;
    struct Student* NEXT;
};


/////////////////////////////////////////
struct Student* init(int nEge)
{

     struct Student *p = (struct Student*)malloc(sizeof(struct Student));

     p-> ege = nEge;
     p->NEXT =    0;

return p;
}



//////////////////////////////////////////
void add(struct Student** h, int nEge)
{
    struct Student* novy = (struct Student*)malloc(sizeof(struct Student));
    novy->ege = nEge;
    novy->NEXT = *h;

    *h = novy;
}

///////////////////////////////////////////////
void addend(struct Student **h, int nEge)
{
    struct Student* novy = (struct Student*)malloc(sizeof(struct Student));
    struct Student* curr = *h;
    while (curr->NEXT != NULL) {
        curr = curr->NEXT;
    }
     novy-> ege = nEge;
     novy->NEXT = NULL;
     curr->NEXT = novy;
}

//////////////////////////////////////////////
int delln(struct Student** h, int m)
{
    struct Student* novy = (struct Student*)malloc(sizeof(struct Student));
    struct Student* curr = *h;
    if (m == 0) {
        *h = curr->NEXT;
        free(curr) ;
        return 0 ;
    }
    for (int i = 1; i < m; i ++) {
        curr = curr->NEXT;
    }
     novy = curr->NEXT;
     curr->NEXT = novy ->NEXT;
     free(novy) ;
     novy = curr->NEXT;
}

//////////////////////////////////////////////////
int addn(struct Student **h, int m, int nege)
{

    struct Student *novy = *h;
    struct Student *nov  = (struct Student*)malloc(sizeof(struct Student));
    struct Student *curr = *h;

    if(m == 0)
    {
        add(h,  nege);
        return 0 ;
    }

    for(int i = 1; i < m; i ++)
    {
        if(curr->NEXT == NULL)
        {
            addend(h, nege);
            return 0;
        }
        curr = curr->NEXT;
    }

    novy = curr->NEXT;

    nov -> ege = nege;
    curr->NEXT =  nov;
    nov ->NEXT = novy;
}

/////////////////////////////////////////
void show(struct Student *h)
{

     struct Student* p = h;

     while(p)
     {
        printf("%d ", p->ege);
        p = p->NEXT;
     }
}


/////////////////////////////////////////////
void ja_svoboden(struct Student *h)
{

     struct Student *p = h;

     while(p)
     {
        p = p->NEXT;
        free(h);
        h = p;
     }
}

/////////////////////////////////////////////
int main()                                 //
{

    struct Student *head;

    int       n, m, nege;

    scanf("%d", &n);                       //                                             Кол-во элементов  в списко

    if(n == 0)
    {
        scanf("%d%d", &m, &nege);
        head = init(nege);
        show( head);
        return 0;
    }

    scanf("%d", &m);
    head = init( m);

    for(int i = 1; i < n; i++)
    {
        scanf("%d" , &m);
        addend(&head, m);
    }

    scanf("%d%d", &m, &nege);
    addn(&head, m, nege);

           show(head);
    ja_svoboden(head);

return 0;
}