ROW SUM AND COLUMN SUM OF A 2-D MATRIX USING POINTER

C++ program to find the row and column sums of a two-dimensional array of integers using pointers. The underlying representation of the 2-d array must be a single-subscripted array of integers with rows*columns number of elements. Calculate row sum and column sum and display the result along with the array. 

 

#include<iostream.h>

#include<conio.h>

void main()

{

  int r,c,i,j;

  clrscr();

  cout<<"Enter the no. of rows and columns"<<endl;

  cin>>r>>c;

  int *a=new int[r*c];

  int *colsum=new int[c];

  int *rowsum=new int[r];

  cout<<"Enter the array elements\n";

  for(i=0;i<r;i++)

  {

    rowsum[i]=0;

    for(j=0;j<c;j++)

    {

      cin>>a[i*c+j];

      rowsum[i]=rowsum[i]+a[i*c+j];

    }

  }

  for(j=0;j<c;j++)

  {

    colsum[j]=0;

    for(i=0;i<r;i++)

    {

      colsum[j]=colsum[j]+a[i*c+j];

    }

  }

  cout<<"\nThe no.s are\n";

  for(i=0;i<r;i++)

  {

    for(j=0;j<c;j++)

    {

      cout<<a[i*c+j]<<"\t";

    }

    cout<<endl;

  }

  cout<<"\nRow sum:\n";

  for(i=0;i<r;i++)

  {

    cout<<"row "<<(i+1)<<": "<<rowsum[i]<<endl;

  }

  for(i=0;i<c;i++)

  {

    cout<<"column "<<(i+1)<<":"<<colsum[i]<<endl;

  }

  getch();

}

OUTPUT