# Sum of row and column of a matrix

Write a Program to compute the sum of row and each column of a matrix

For example:

```
Input:
[1,4,7]
[2,5,8]
[3,6,9]
Output
90
Sum of each row and column i.e. 12+15+18+6+15+24
```

#### Solution

```
using System;
namespace MatrixSum
{
class Program
{
static void Main()
{
int[,] a = {
{1, 4, 7},
{2, 5, 8},
{3, 6, 9}
};
var rows = a.GetLength(0);
var cols = a.GetLength(1);
var total = 0;
for (var i = 0; i < rows; i++)
{
var sumRow = 0;
for (var j = 0; j < cols; j++)
{
sumRow += a[i, j];
}
total += sumRow;
Console.WriteLine($"Row {i + 1} : {sumRow}" );
}
for (var i = 0; i < cols; i++)
{
var sumCol = 0;
for (var j = 0; j < rows; j++)
{
sumCol += a[j, i];
}
total += sumCol;
Console.WriteLine($"column{i + 1} :{sumCol} ");
}
Console.WriteLine($"Sum of matrix is {total}");
Console.ReadLine();
}
}
}
```