Code:
using System;
using System.Collections.Generic;
using System.Text;
class mat
{
int i, j, m, n;
int[,] a = new int[20, 20];
public void get()
{
Console.WriteLine("Enter Row Value");
m = int.Parse(Console.ReadLine());
Console.WriteLine("Enter Column Value");
n = int.Parse(Console.ReadLine());
Console.WriteLine("Enter Elements one by one");
for (i = 1; i <= m; i++)
{
for (j = 1; j <= n; j++)
{
a[i, j] = int.Parse(Console.ReadLine());
}
}
Console.WriteLine("Given Matrix");
for (i = 1; i <= m; i++)
{
for (j = 1; j <= n; j++)
{
Console.Write("\t{0}", a[i, j]);
}
Console.WriteLine();
}
}
public void diag()
{
int d;
d = 0;
if (m == n)
{
for (i = 1; i <= m; i++)
{
for (j = 1; j <= n; j++)
{
if (i == j)
{
d = d + a[i, j];
}
}
}
Console.WriteLine("Diagonal Sum= {0}", d);
}
else
{
Console.WriteLine("Can't Perform Diagonal Sum");
}
}
class matsum
{
static void Main(string[] args)
{
mat ma = new mat();
ma.get();
ma.diag();
Console.Read();
}
}
}
Output:
Enter Row Value : 2
Enter Column Value : 2
Enter Elements One by One :
2
2
2
2
Given Matrix :
2 2
2 2
Diagonal Sum :4
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