Tukukkk

Any desired array entered by the user , code look for every column , if any element in any column is equal to number y.Then the code should add a new column of zeros in front of it.

Code

#include <pch.h>

#include <iostream>



using namespace std;



int main()

{

int y, rows, columns;

std::cout << "Enter the number of rows: ";

std::cin >> rows;

std::cout << "Enter the number of columns: ";

std::cin >> columns;

std::cout << "Enter a number Y: ";

std::cin >> y;



//-----------------------Generating 2-D array---------------------------------------------------------

int **array = new int*[2 * rows];

for (int i = 0; i < rows; i++)

    array[i] = new int[columns];

//------------------------Generating bool--------------------------------------------------------------

bool *arrx = new bool[columns];

//-----------------------Input Array Elements---------------------------------------------------------

std::cout << "Enter the elements" << std::endl;

for (int i = 0; i < columns; i++)

    for (int j = 0; j < rows; j++)

        std::cin >> array[i][j];

//--------------------Loop for the array output--------------------------------------------------------

for (int i = 0; i < columns; i++) {

    for (int j = 0; j < rows; j++) {

        std::cout << array[i][j] << " ";

    }

    std::cout << "n";

}

//-------------------Loop for finding columns with even numbers----------------------------------------

for (int i = 0; i < columns; i++) {

    arrx[i] = false;

    for (int j = 0; j < rows; j++) {

        if (array[j][i] == y) {

            arrx[i] = true;

        }

    }

}

std::cout << "n";

//--------------------Loop for addition of new columns infront of even numbers--------------------------

for (int i = 0; i < columns; i++) {

    for (int j = 0; j < rows; j++) {

        std::cout << array[i][j] << " ";

    }

    std::cout << "n";

    if (arrx[i]) {

        for (int i = 0; i < rows; i++) {

            std::cout << 0 << " ";

        }

        std::cout << "n";

    }

}



return 0;

}

Here this code adds only rows to the array while I need to add columns . I have tried changing array[i][j] to array[j][i] but in vain.

You need to replace

for (int i = 0; i < columns; i++) {

    for (int j = 0; j < rows; j++) {

        std::cout << array[i][j] << " ";

    }

    std::cout << "n";

    if (arrx[i]) {

        for (int i = 0; i < rows; i++) {

            std::cout << 0 << " ";

        }

        std::cout << "n";

    }

}

with

for (int i = 0; i < rows; i++) {

    for (int j = 0; j < columns; j++) {

        std::cout << array[i][j] << " ";

        if (arrx[j]) {

           std::cout << 0 << " ";

         }

    }

}

This prints a zero after every element whose column value is marked. What you were trying to do is print to standard output column by column which is not how it works.

Also I urge you to consider using a std::vector instead of plain pointers to avoid errors like here where you have forgotten to deallocate your memory.