using System;

​

public class Program

{

    public static void Main()

    {

        int[,] ar = new int[,]{{1,2,3,4},{5,6,0,8},{0,10,11,12},{13,14,15,16}};

        for(int i= 0 ;i< 4;i++)

        {

            for(int j=0;j<4;j++)

            Console.Write(ar[i,j] + " ");

            Console.WriteLine();

        }

        Program prg = new Program();

        prg.MakeRowAndColumnsZeroInMatrix(ar);

    }

    public void MakeRowAndColumnsZeroInMatrix(int[,] ar)

    {

        int len = 4;                

        int[] row = new int[4];

        int[] col = new int[4];

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

        {   

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

            {

                if(ar[i,j] == 0){row[i]=1;col[j]=1;}

            }

        }

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

        {

            if(col[i]==1)

            {

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

                {

                    ar[j,i] = 0;

                }

            }

            if(row[i]==1)

            {

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

                {

                    ar[i,j] = 0;

                }

            }

        }

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

        {

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

            Console.Write(ar[i,j] + " ");

            Console.WriteLine();

        }

    }

}