Write a program that take value of 3 x 3 matrix from user and display the sum of diagonal elements of a matrix ?

Write a program that take value of 3 x 3 matrix from user and display the sum of diagonal elements of a matrix .

PROGRAM : -

#include <iostream.h>

#include <conio.h>

main()

{

   clrscr();

   int arr[3][3],i,j,d1=0,d2;

   cout<<"Please enter the values of 3x3 matrix :"<<endl;

   for (i=0;i<3;i++)

   for (j=0;j<3;j++)

   cin>>arr[i][j];

 

   cout<<"\nSo The Matrix Is : "<<"\n";

   for (i=0;i<3;i++)

   {

   {

   for (j=0;j<3;j++)

   cout<<arr[i][j]<<"  ";

   }

   cout<<"\n";

   }

   cout<<"\nSo The Sum Of Diagonals : "<<"\n";

   for (i=0;i<3;i++)

   for (j=0;j<3;j++)

   {

   if (i==j)

   d1=d1+arr[i][j];

   }

   cout<<"Diagonal-1 = "<<d1<<"\n";

   d2=arr[0][2]+arr[1][1]+arr[2][0];

   cout<<"Diagonal-2 = "<<d2;

   return 0;

}

 

OUTPUT : -