Answer:
Here is the C++ program:
#include <iostream> //to use input output functions
using namespace std; // to identify objects like cin cout
const int MAX_ROWS=3; //sets the maximum number of rows to 3
const int MAX_COLUMNS=2; //sets the maximum number of columns to 2
//function prototypes
void printArray(const int array[MAX_ROWS][MAX_COLUMNS]);
void Even(const int arrayIntValues[MAX_ROWS][MAX_COLUMNS]);
int main(){ //start of main method
int arrayIntValues[MAX_ROWS][MAX_COLUMNS]; //declares a 2D array of integers
cout<<"Enter elements of 2D array: "; //prompts user to enter integers in a 2D array
for(int i=0;i<MAX_ROWS;i++) { //outer loop to iterate through rows
for(int j=0;j<MAX_COLUMNS;j++) //inner loop to iterate through columns
cin>>arrayIntValues[i][j]; } //reads and stores integers in 2D array
Even(arrayIntValues); //calls Even method by passing arrayIntValues
printArray(arrayIntValues); } //calls printArray method by passing arrayIntValues
void Even(const int arrayIntValues[MAX_ROWS][MAX_COLUMNS]){ //method that takes an array as parameter and finds the total number of even elements in the array
int count = 0; //counts the number of even numbers in array
for(int row=0;row<MAX_ROWS;row++){ //outer loop iterates through rows of the array
for(int col=0;col<MAX_COLUMNS;col++){ //inner loop iterates through columns of the array
if(arrayIntValues[row][col]%2==0 && arrayIntValues[row][col]>=0) //if the element at specified index of 2D array is an even number i.e. completely divisible by 2 and that element is positive
count++; } } //adds 1 to the count variable each time an even positive integer appears in the array
cout<<"total number of even elements in the array: "<<count<<endl; } //displays the number of even element in arrayIntValues
void printArray(const int array[MAX_ROWS][MAX_COLUMNS]){ //method that takes an array as parameter and displays the even numbers in that array
for(int row=0;row<MAX_ROWS;row++){ //outer loop iterates through rows of the array
for(int col=0;col<MAX_COLUMNS;col++){ //inner loop iterates through columns of the array
if(array[row][col]%2==0 && array[row][col]>=0) //if the element at specified index of 2D array is an even number i.e. completely divisible by 2 and that element is positive
cout<<array[row][col]<<endl; //displays the even element of the array
else //if element is not even
continue; } } } //continues the loop to look for even elements
Explanation:
The program first prompts the user to enter elements in 2D array. It then calls Even method which iterates through the rows and columns of the array to look for the positive even numbers (elements) in array . Whenever a positive even number is encountered in the array, the count variable is incremented to 1. At the end the method returns an integer which is the total number of even elements in the array. Then the program calls printArray method which iterates through the rows and columns of the array to look for the positive even numbers (elements) in array . Whenever a positive even number is encountered in the array, that element is displayed on the output screen. The screenshot of the output is attached.
