Using class instead of struct and constructor issues - c++

Question

I am trying to move from using structs to using classes, and I have a few questions with my - not fully complete, but enough to illustrate my queries - code (thank you in advance for clarifying these):
I am having problems with creating a constructor that takes in arguments, specifically the line in the header file that I have currently left as neighborAtt(int neighbor_id, int att_1, int att_2);.
When using neighborAtt as a struct, I could do it easily as neighborAttributes currentNode(neighborID, att1, att2);. What is the class-equivalent?
In the .cpp file, I know that I need to define the constructor as neighborAtt::neighborAtt().
Do I need to this with the functions (i.e. include neighborAtt::) or is what I've done accurate?
This is my header file:
#if !def connectivity_H
#define connectivity_H
#include <iostream>
#include <vector>
#include <list>
#include <string>
#include <sstream>
#include <fstream>
class listAtt;
class vecListAtt;
class neighborAtt //contains the neighbour and associated attributes of a node
{
public:
neighborAtt();
neighborAtt(int neighbor_id, int att_1, int att_2);
vecListAtt connFrFile(int file_ext);
vecListAtt makeList(std::vector<std::list<neighborAtt>> nodeAndInfo, int nodeID, neighborAtt neighAndAtt);
neighborAtt getAtt(std::string currentLine);
private:
int neighborID;
int attribute1;
int attribute2;
};
typedef std::list<neighborAtt> listAtt;
typedef std::vector<listAtt> vecListAtt;
#endif
and the .cpp file:
#include "stdafx.h"
#include "connectivity.h"
neighborAtt::neighborAtt(): neighborID(0), attribute1(0), attribute2(0) {}
//neighborAtt::neighborAtt constructor with arguments
vecListAtt connFrFile(int file_ext)
{
//code
}
neighborAtt getAtt(std::string line)
{
//code
}

Answer 1

For the second constructor (one with the arguments) you do just the same as for one without them. Or did I get the question wrong? It'd be like:
neighborAtt::neighborAtt(int neighbor_id, int att_1, int att_2)
: neighborID(neighbor_id),
attribute1(att_1),
attribute2(att_2)
{
}
And for the methods you must go the same way:
vecListAtt neighborAtt::connFrFile(int file_ext)
{
//code
}