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A

#include<stdio.h>
#include<conio.h>
#include<string.h>
void main()
{
int n,i=0,j,k,row,col;
int a[4][4],b[4][4],flag[4][4];
clrscr();
printf("Enter no. of rows: ");
scanf("%d",&row);
printf("Enter no. of cols: ");
scanf("%d",&col);
for(i=0;i<row;i++)
{
printf("Enter line %d   ",i+1);
	for(j=0;j<col;j++)
	{
		scanf("%d",&a[i][j]);
		flag[i][j]=0;
	}
}

for(i=0;i<row;i++)
{
	for(j=0;j<col;j++)
	{
		if(a[i][j]==0)
		{
			for(k=0;k<col;k++)
			{ //making entire row zero
				b[i][k]=0;
				flag[i][k]=1;//mark those zeros because they will be reconsidered again by this algo.
			}
			for(k=0;k<row;k++)
			{//making entire column zero
				b[k][j]=0;
				flag[k][j]=1;//mark those zeros because they will be reconsidered again by this algo.
			}
		}
		else if(flag[i][j]==0)
			b[i][j]=a[i][j];
	}
}

printf("Output\n");
for(i=0;i<row;i++)
{
	for(j=0;j<col;j++)
	{
		printf("%d ",b[i][j]);
	}
	printf("\n");
}
getch();
}

Warning: Illegal string offset 'name' in /home/prepdo6/gpl4you/discussquessub.php on line 681
A writing in very simple for all students in c...............

  #include<stdio.h>
        # include<stdlib.h>
        
        int main()
        {
          int arr[5][5];
          int row,col;
          int i,j;
          printf("\nplease input the row and coloumns of the matrix::");
          scanf("%d%d",&row,&col);
          
          printf("\nplease input the elements of the matrix::");
          for(i=0;i<row;i++)
            {
                for(j=0;j<col;j++)
                    {
                             scanf("%d",&arr[i][j]);
                     }
            }                             
        fflush(stdin);
        printf("\nthe elements of the matrix are::\n");
        
        for(i=0;i<row;i++)
            {
                for(j=0;j<col;j++)
                    {
                             printf("%4d",arr[i][j]);
                     }
                     printf("\n");
                    
            }                  
        for(i=0;i<row;i++)
            {
                for(j=0;j<col;j++)
                    {
                                    
                         static int a=-1;
                         static int b=-1;       
                            if((i==a)||(j==b))
                            continue;        
                                    
                                    
                            else if(arr[i][j]==0)
                             
                                    {
                                         a=i;
                                         b=j; 
                                         int k;   
                                             
                             for(k=0;k<col;k++)
                    {
                                    arr[a][k]=0;  
                     } 
                            for(k=0;k<row;k++)
                                             {
                                                 arr[k][b]=0;
                                                     
                                             } 
                                    }               
                     }
            }                  
        
        printf("\n new matrix is\n");
        
        for(i=0;i<row;i++)
            {
                for(j=0;j<col;j++)
                    {
                             printf("%4d",arr[i][j]);
                     }
                     printf("\n");
             }        
         system("PAUSE");
         return 0;
        
        }

Warning: Illegal string offset 'name' in /home/prepdo6/gpl4you/discussquessub.php on line 681
A

import java.util.*;
class array
{

int seti,setj,setflag=1;

  public static void main(String args[])
  {
   Scanner sc=new Scanner(System.in);
   System.out.println("enter no of rows and columns");
   int  row=sc.nextInt();
   int col=sc.nextInt();
   int arr[][]=new int[row][col];
   System.out.println("enter the elements");

   for(int i=0;i<arr.length;i++)
   {
    for(int j=0;j<arr.length;j++)
    {
    arr[i][j]=sc.nextInt();

       }

     }
System.out.println("the elements are------>");

     for(int h=0;h<arr.length;h++)
     {

     for(int k=0;k<arr.length;k++)
     {
     System.out.print(arr[h][k]+"\t");

       }
       System.out.println();


     }

 new array().check(arr);

        }


        public void check(int ar[][])
        {

			for(int i=0;i<ar.length;i++)
			{
				if(setflag==0)
				{
					break;
					}
				for(int j=0;j<ar.length;j++)
				{
					if(ar[i][j]==0)
					{
						seti=i;
						setj=j;
						setflag=0;
						arrange(seti,setj,ar);
						break;


						}




					}

				 }



			}


			void arrange(int i,int j1,int arr[][])
			{

				for(int h=0;h<arr.length;h++)
				{
					for(int j=0;j<arr.length;j++)
					{
						if(h==i)
						{

							arr[h][j]=0;

							}

							if(j==j1)
													{

														arr[h][j]=0;

							}


						}

					}
					//after arrange


					System.out.println("the elements are------>");

					     for(int h=0;h<arr.length;h++)
					     {

					     for(int k=0;k<arr.length;k++)
					     {
					     System.out.print(arr[h][k]+"\t");

					       }
					       System.out.println();


     }



				}




 }<br/>

in java run it...

Warning: Illegal string offset 'name' in /home/prepdo6/gpl4you/discussquessub.php on line 682
b

int i,j;
a[3][3]
for(int i=0;i<3;i  )
{
for(j=0;j<3;j  )
cin>>a[i][j]

Warning: Illegal string offset 'name' in /home/prepdo6/gpl4you/discussquessub.php on line 682
R

for (a=0;a<M;a++) 
for (b=0;b<N;b++)
if(arr[a][b]==0)
{
i=0,j=0;
if(arr[a-1][b]!=0)
while(i<M)
{arr[i][j]=0;i++  }

if(arr[a][b-1]!=0)
while(j<N)
{arr[i][j]=0;j++ }
}

Warning: Illegal string offset 'name' in /home/prepdo6/gpl4you/discussquessub.php on line 681
R ???

Warning: Illegal string offset 'name' in /home/prepdo6/gpl4you/discussquessub.php on line 681
R if(m==0