c++ - Deleting from list -

c++ - Deleting from list -

im having list this:

struct list { int i; int n = 0; list *previous; list *next; list * head = null; list * tail = null; };

im adding elements list , illustration have list { 10000, 10, 200 }. creating fine.

my erase function this:

list * erase(list * lista, list * elem) { list * pom; if(elem != null) { pom = elem->next; elem->next = pom->next; } else { pom = lista; lista = lista->next; } lista->n--; delete pom; }

now when want delete item (exactly item, others it's working fine):

erase(l1, l1->head->next->next);

i want show result function:

void showsequence(list * m) { for(int = 0; < m->n; i++) { printf("%i ", m->head->i); m->head = m->head->next; } }

and result need phone call showsequence twice because first time gives me {0, 10} , sec (fine) {200, 10}.

any ideas why?

your showsequence function modifies head link. on sec call, m->head @ lastly link.

void showsequence(list * m) { list *c = m->head; for(int = 0; < m->n; i++) { printf("%i ", c->i); c = c->next; } }

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