Function to copy one array to another with bounds checking. It does work with all types. Copy this code into a header file called ArrayCopy.h. In main file code do this.

include "ArrayCopy.h"

...
int destinationArray[some size1];
int sourceArray[some size2]= {1,2,3,4,5,6};

CopyArray(destinationArray, source array, some size1, some size2);
...

#ifndef ARRAYCOPY_H
#define ARRAYCOPY_H

#include <iostream>

template <typename type>
void CopyArray( type *tA, type *tB, int aSize, int bSize) // destination, source, size of destination, size of source
{
    if(aSize == bSize)
    { 
        for (int iii = 0; iii < bSize; ++iii)
        {
            tA[iii]= tB[iii];
        }

    }
    else if(aSize > bSize)
    {
        int difference = aSize-bSize;
        int position = aSize-difference;
        for (int iii = 0; iii < bSize; ++iii)
        {
            tA[iii]= tB[iii];
        }
        for (position; position < aSize; ++position)
        {
            tA[position] = 0;
        }
    }
    else if(bSize > aSize)
    {
        for (int iii = 0; iii < aSize; ++iii)
        {
            tA[iii]= tB[iii];
        }
    }
    else
    {
        cerr << "Oops, Something Has Gone Awry. Cannot Copy.";
    }

}

#endif