Check Even and Odd Number

//Auther   : LearningPen
//Date     : September 26, 2014 Firday
//Email    : Oursharingclub@163.com
//Tool     : Dev C++
//Language : C++
//Function : Check Even and Odd Number

#include <iostream>
#include <ctype.h>
#include <windows.h>

using std::cout;
using std::cin;


//------Check Even or Odd function  and Menu function
bool CheckEvenOrOdd( int number );
void Menu( void );

//------main function -------
int main( void )
{
Menu();

return 0;
}  //End of main function

//----Even or Odd function ,Menu function
bool CheckEvenOrOdd( int number )
{
// Even number ,return 1; else return 0
return ( ( number% 2== 0 ) ? 1: 0 );
} //End of CheckEvenOrOdd functin

void Menu( void )
{
char number;
char letter;

system( "color A" );  // Only change the text color

cout<< "\n\t*******Even and Odd number solver *******";
cout<< "\n\n";
cout<< "\t\t  Enter a number : ";
cin>> number;

if( isdigit( number )== 0 )
{
    cout<< "\n\n\t\t  Sorry, "<< number<< " is not digit!!!\n";
cout<< "\t\t  Try again!";

Menu();
}

if( CheckEvenOrOdd( number) )
{
   cout<< "\n\t\t  "<< number<< " is an Even numuber ";
}
else
{
   cout<< "\n\t\t  "<< number<< " is an Odd number ";
}

system( "color C" );  // Only change the text color

cout<< "\n\n\t\t  Do you want to continue( Y/N ): ";
cin>> letter;

if( toupper( letter )== 'Y' )
{
system( "cls" );  //clear screen

   Menu();
}
else
{
   exit( 1 );
}

return ; // returns nothing
}  //End of Menu function