How to combine array.h, array.cpp and main.cpp files together? - c++

Question

How to combine array.h, array.cpp and main.cpp files together? I am getting an error while compiling main.cpp, that class Array is not declared in scope.
main.cpp:
#include<iostream>
#include "Array.h"
#include "Array.cpp"
using namespace std;
int main(){
Array a;
a.Array();
return EXIT_SUCCESS;
}
Array.h:
#ifndef ARRAY_H_INCLUDED
#define ARRAY_H_INCLUDED
class Array{
private:
int data;// The value or data stored in the node
int ArraySize;//Size of array
int* array;
public:
Array();
};
#endif
Array.cpp:
#include <iostream>
#include <cstdlib>
using namespace std;
#include "Array.h" // user defined header file
Array::Array(){ //initialise array
cout << "Initialising array elements----------------->"<< endl;
for (int i=0; i < 4; i++){
//array[i]= 1;
cout << i << endl;
}
}
ERROR message: invalid use of 'class Array'

Answer 1

The problem you have is that you are attempting to call the constructor of a class on an instance of that class:
Array a;
a.Array();
When you declare a function the same name as a class, you are creating a constructor for that class.
class Array
{
public:
// Default constructor
Array();
// This is a function you can call
void PrintData();
}
You can't call this function though. It's called automatically when you create an object of class Array:
Array a; // This will call Array's constructor
a.PrintData(); // This will call the function PrintData on the object 'a'