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you cannot do what you are asking arrays are not dynamic, you would have to change the array a list of pointers something like

struct node{
        int num;
        struct node *next;
};

then have a delete function that would go like this

void delete(int place, struct node *list){
        int count = 0;
        struct node *tmp = list;
        struct node *tmp2;
        for(count; count < place; count++){
                tmp = tmp->next;
        }
        tmp2 = tmp;
        tmp2 = tmp2->next;
        tmp->next = tmp2->next;
        free(tmp2);
}

well something like that it looks a little off to me but you should get the gist.

edit: disregard this post, i thought this was in the c/c++ section