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C++ Vector Implementation


New Coder
I declare a vector of object Persons

#ifndef PostO_H
#define PostO_H
#include "Person.h"
#include "Address.h"
#include <iostream>
#include <string>
using namespace std;
class PostO
vector <Person> mList[];

When I do so, I get this error, underlining mList.

"incomplete type is not allowed"

What does this mean, and how do I resolve it?
Last edited by a moderator:

Krusty the Senile

Active Coder
You may need to #include <vector> if it hasn't been included in any of the other header files.
You should also be able to declare vector<Person> mList; without the brackets - your declaration is defining an array of vectors but without a given array size (maybe that's the problem?). So instead of mList[3].push_back(aPerson); I think your intention is mList.push_back(aPerson);.