Odd and Even Numbers Using Functions in C++

 A simple program that will ask the user how many items to process and then it will accept a series of an integer numbers and then our program will list down the even and odd numbers using functions in C++ programming language.

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Program Listing
// Written By: Mr. Jake R. Pomperada, MAED-IT
// Date : November 21, 2010 Sunday
// Tool : C++


#include <iostream>

using namespace std;

// Global Variables

int a=0,r=0,data=0,b=0;
int values[10];


void get_data();
void display_even();
void display_odd();


void get_data(void)
{
     cout << "\tOdd and Even Numbers Using Functions in C++";
     cout << "\n\n";
     cout << "How Many Numbers : ";
     cin >> data;
     cout << "\n";
        for (b=1; b <= data; b++)
            {
            cout << "Enter Item No. "
                  << b <<  " :";
            cin >> b[values];
          }
}


void display_even(void)
{

    cout << "\n\n";
    cout << "List of Even Numbers : ";
    cout << "\n\n";
        for (a=1; a<=data; a++) {
            r = a[values] % 2;
            if (r ==0) {
                cout << " " <<a[values]
                << " ";
         }

     }
}


void display_odd(void)
 {
    cout << "\n\n";
    cout << "List of Odd Numbers : ";
      cout << "\n\n";
     for (a=1; a<=data; a++) {
         r = a[values] % 2;
         if (r !=0) {
          cout << " " <<a[values]
            << " ";
         }
     }
 }
 main() {

     get_data();
     display_even();
     display_odd();
     cout << "\n\n";
     system("pause");
 }