Append Array with Pointer

[Daok]

Hello,
I have a question. I am trying to code a function that will append two array.

Here is the code, all work but the value doesn't return well, why?

#include <iostream>
using namespace std;

void CopyChaineSuite(char *&s1, char *s2);

void main()
{
	char cPrenom1[80] = "Me";
	char cPrenom2[80] = "andYou";
	CopyChaineSuite(cPrenom1, cPrenom2);
	cout << "Prenom #1 : " << cPrenom1 << endl;
	cout << "Prenom #2 : " << cPrenom2 << endl;
}//Fin du main

void CopyChaineSuite(char *&s1, char *s2)
{
	
	char *ptrDebut = new char;
	char *p = ptrDebut;

	while(*s1 != '\0')
		*ptrDebut++ = *s1++;

	while(*s2 != '\0')
		*ptrDebut++ = *s2++;
	*ptrDebut = '\0';

	s1 = p;
}//Fin de CopyChaineSuite