Question

output of these
import java.util.*;

class arr16
{
public static void main(String args[])
{
Scanner sc = new Scanner(System.in);

int i,j,row,col,sum=0;
System.out.println("Enter the number of rows:");
row = sc.nextInt();
System.out.println("Enter the number of columns:");
col = sc.nextInt();

int[][] mat = new int[row][col];

System.out.println("Enter the elements of the matrix") ;
for(i=0;i<row;i++)
{
for(j=0;j<col;j++)
{
mat[i][j] = sc.nextInt();
}
}

System.out.println("The elements of the matrix") ;
for(i=0;i<row;i++)
{
for(j=0;j<col;j++)
{
System.out.print(mat[i][j]+"\t");
}
System.out.println("");
}

for(i=0;i<row;i++)
{
for(j=0;j<col;j++)
{
if(i==j) //this condition checks for diagonal
{
sum = sum + mat[i][j];
}
}
}

System.out.printf("SUM of DIAGONAL elements of the matrix = "+sum) ;
}
}​

Answer 1

Answer:

output -

hope it helps

Explanation: