How do I implement a reverse code to my code?

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C++

Arduino Uno

So this is the code I currently have, I have found a code that could possibly help me but I'm not sure how I would implement that code into my own. What I want it to do after it has printed the message sent, is to print the same message but in reverse.

char Message[128] = "";
char MessageInversed[128] = "";

boolean Done;

void setup()
{

// put your setup code here, to run once:
Serial.begin(9600);
Serial.println("<Enter your text>");
}

void loop()
{
Readmessage();
Showmessage();
}

void Readmessage()
{
static int CharCount = 0 ;
char EnterCheck = '\n';
char NextChar;

while (Serial.available() > 0 && Done == false)
{
NextChar = Serial.read();

if (NextChar != EnterCheck)
{
Message[CharCount] = NextChar;
CharCount++;
}
else
{
Message[CharCount] = '\0';
CharCount=0;
Done = true;
}
}

}



void Showmessage()

{

if (Done == true)

{

Serial.print("Your message length is: ");

Serial.println(strlen(Message));

Serial.print("This is your message: ");

Serial.println(Message);

Done = false;

}

}

This is the code I found, Im not sure how to put it into my own code though if that would be to work:

// Recursive C++ program to reverse an array

#include <bits/stdc++.h>

using namespace std;

/* Function to reverse arr[] from start to end*/

void rvereseArray(int arr[], int start, int end)

{

if (start >= end) 

return; 


int temp = arr\[start\]; 

arr\[start\] = arr\[end\]; 

arr\[end\] = temp; 

// Recursive Function calling 

rvereseArray(arr, start + 1, end - 1); 
}

What I have tried:

Googling, but I don't get how to implement it