/*
 *  FILE:  menu.cc
 *  THIS PROGRAM IS A MENU DRIVEN PROGRAM WHICH TELL IF AN INTEGER IS:
 *  EVEN, ODD, DIVISIBLE BY ANOTHER INTEGER, PRIME, PERFECT SQUARE,
 *  PERFECT CUBE.
 *
 *  PROGRAMMER:  RiNN
 *  INSTRUCTOR:  Prof. Lee Mosher
 *  DATE:  November 23, 1997
 *  CLASS:  CS101:02
 *
 */

#include                     // iostream LIBRARY
#include                         // math LIBRARY

// CONST GLOBAL VARIABLE 
const char exit_choice = 'q';

// FUNCTION PROTOTYPES or FUNCTION DEFINITION

void display_menu (char & choice);        //Menu
void input_int (int & n);                 //INPUT INT FUNCTION
void do_choice (char);                    //DO CHOICE FUNCTION
void do_even ();                          //TEST EVEN INTEGERS
void do_odd ();                           //TEST ODD INTEGERS
void do_divisible ();                     //TEST INTEGERS DIVISIBILITY
void do_prime ();                         //TEST IF INTEGER IS PRIME
void do_square ();                        //TEST IF INTEGER IS SQUARE
void do_cube ();                          //TEST IF INTEGER IS CUBED
void do_quit ();                          //GOOD BYE MSG
bool isprime (int p);                     //USED IN do_prime FUNCTION
bool IsSquare (int n);                    //UNED IN do_square  FUNCTION
bool IsCube(int n);                       //USED IN do_cube FUNCTION

void main ()                              //MAIN FUNCTION
{	
  char choice;                            //VARABLE FOR CHOICES
  int n;                                  //VARABLE FOR INT
  cout << "\n\n\n";                       //SPACES..
  do {                                    //DO-WHILE LOOP
      display_menu (choice);              //MENU FUNCTION
      do_choice (choice);                 //FUNCTION WHERE EXECUTED CHOICE
  } while (choice != exit_choice );       //LOOP UNTILL EXIT
}

void do_even () {                         //FUNCTION FOR INTEGER IS EVEN
int n;
cout << "\t  Please enter an integer. I will tell you if it is even: ";
input_int(n); cout << endl;
  if (n%2 == 0)                            //TEST IF INTEGER IS EVEN
   cout << "\t  The integer " << n << " is even." << endl;
  else                                     //VOID IF NOT EVEN
   cout << "\t  The integer " << n << " is NOT even." << endl;
}

void do_odd (){                           //FUNCTION FOR INTEGER IS ODD
int n;
cout << "\t  Please enter an interger.  I will tell you if it is odd: ";
input_int (n); cout << endl;

  if (n%2 !=0 )                            //TEST IF INTEGER IS ODD
   cout << "\t  The integer " << n << " is odd" << endl;

  else                                     //VOID IF NOT ODD
   cout << "\t  The integer " << n << " is NOT odd" <> n; 
}

// MENU FUNCTION
void display_menu (char & choice) 
{
cout << "\n\t MENU DRIVEN PROGRAM" << endl
     << "\t +++++++++++++++++++++++" << endl;
cout << "\t e - tell if an integer is even" << endl
     << "\t o - tell if an integer is odd " << endl
     << "\t d - tell is an integer is divisible by another integer"<> choice; cout << endl;
}

void do_quit () {                            //GOOD BYE MSG
 cout << "\n\t  Thank you for Using menu.cc  Good Bye!"
      << "\n\n\n\n\n\n";
}