Answer:
I am writing a JAVA program. Let me know if you want this program in some other programming language.
import java.util.Scanner; // class to take input from user
class EvenOddNum{ //class name
static void EvenOdd(int array[]) { //function that takes an array as input and displays number of even numbers and odd numbers
int even = 0; // counts even numbers
int odd = 0; //counts odd numbers
for(int i = 0 ; i < array.length-1 ; i++){ //loop through the array elements till the second last array element
if ((array[i] % 2) == 1) { // if the element of array is not completely divisible by 2 then this means its an odd number
System.out.println(array[i]+" = odd"); //display that element to be odd
odd++ ; } //adds 1 to the count of odd every time the program reads an odd number
else{ // if above IF condition evaluates to false then the number is an even number
System.out.println(array[i]+" = even"); //display that element to be odd
even++ ; } } //adds 1 to the count of odd every time the program reads an odd number
System.out.println( "Number of even numbers = " + even); //counts the total number of even integers in the array
System.out.println( "Number of odd numbers = " + odd); } //counts the total number of odd integers in the array
public static void main (String[] args){ //start of main function body
Scanner scan= new Scanner(System.in); //creates Scanner class object
int [] integers = new int[10]; //declares an array named integers that stores 10 integers
System.out.print("Enter numbers: "); //prompts user to enter the integers
for(int i = 0;i<integers.length;i++){ //loops to read the input integers
integers[i] = scan.nextInt(); } //scans and reads each integer value
EvenOdd(integers); } } //calls function EvenOdd to display number of even and odd numbers
Explanation:
The program has a method EvenOdd that takes an array of integers as its parameter. It has two counter variables even and odd. even counts the number of even input integers and odd counts the number of odd input integers. The for loop iterates through each element (integer) of the array except for the last one. The reason is that it is assumed that the input ends with 0 so the last element i.e. 0 is not counted. So the loop iterates to length-1 of the array. The number is odd or even is determined by this if condition: if ((array[i] % 2) == 1) A number is even if it is divisible by 2 otherwise its odd. If the element of array is not completely divisible by 2 i.e. the remainder of the division is not 0 then the number is odd. The modulo operator is used which returns the remainder of the division of number by 2. Each time when an odd or even number is determined, the array[i]+" = even" or array[i]+" = odd" is displayed on the output screen for each integer in the array. Here array[i] is the element of the array and even or odd depicts if that element is even or odd. The last two print statement display the total number of even and odd numbers in the array.
