// How to return an array from a function
// returning arrays can be confusing because you need to 
// return a reference and copy the results into a new memory location
// since an array allocated on the stack, like the example below, doesn't
// disappear when the routine ends.
// filename: arrayreturndemo.cpp  written by Lee Devlin 4-6-2011

#include <iostream>
using namespace std;

char* retArray(char []); // the name of the returned variable is optional in the prototype;
int main()
{
	char arr1[]="first";
    char freespace[20]; // set up some free space holding an empty char array
    int n;
	char * arr4; // set up pointer to char array
    arr4 = freespace; // assign pointer to location of freespace
    cout << arr4 << endl; // see what garbage is in freespace (caution this could hang program!)
    cout << &arr4 << endl; // check location of arr4 pointer
	strcpy(arr4, retArray(arr1));
	cout << "Arr4 contains " << arr4  << endl;
	system("pause");
}
char* retArray(char arr0[])  // this simple function appends the string 'last' to the incoming arrary
{
	char arr3[20];
	strcpy(arr3, arr0);
	
	strcat(arr3, " last");
	cout << "Arr3 contains " << arr3 << endl;
	return arr3;
}