get elements of 2d array c++

To get elements of a 2D array in C++, you can use nested loops to iterate over the rows and columns of the array. Here are the steps to do this:

Declare and initialize a 2D array:

int arr[ROW][COL];

Replace ROW and COL with the desired number of rows and columns for your array.

Use nested loops to iterate over the rows and columns of the array:

for(int i = 0; i < ROW; i++) {
    for(int j = 0; j < COL; j++) {
        // Access and use the element at arr[i][j]
    }
}

The outer loop iterates over the rows, and the inner loop iterates over the columns.

Access and use the element at arr[i][j]: Inside the nested loops, you can access and use the element at the current row and column using the indices i and j. For example, you can print the element:

cout << arr[i][j] << " ";

Replace cout with the appropriate output stream for your program.

Here's the complete code snippet:

#include <iostream>
using namespace std;

int main() {
    const int ROW = 3;
    const int COL = 4;

    int arr[ROW][COL] = {
        {1, 2, 3, 4},
        {5, 6, 7, 8},
        {9, 10, 11, 12}
    };

    for(int i = 0; i < ROW; i++) {
        for(int j = 0; j < COL; j++) {
            cout << arr[i][j] << " ";
        }
        cout << endl;
    }

    return 0;
}

This code snippet declares a 2D array arr with 3 rows and 4 columns, assigns some values to it, and then uses nested loops to print all the elements of the array.