C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
					
public class Program
{
	public static void Main()
	{
		int[,] Main_diagonal = new int[2,2];
		Main_diagonal[0,0] = 8;
		Main_diagonal[0,1] = 4;
		Main_diagonal[1,0] = 3;
		Main_diagonal[1,1] = 0;
		Main_diagonal = Helper.Main_diagonal(Main_diagonal);
		Console.WriteLine();
		
		int[,] Secondary_diagonal = new int[2,2];
		Secondary_diagonal[0,0] = 2;
		Secondary_diagonal[0,1] = 7;
		Secondary_diagonal[1,0] = 9;
		Secondary_diagonal[1,1] = 3;
		Secondary_diagonal = Helper.Secondary_diagonal(Secondary_diagonal);
		Console.WriteLine();
		
		int[,] Line_sum = new int [2,2];
		Line_sum[0,0] = 9;
		Line_sum[0,1] = 3;
		Line_sum[1,0] = 4;
		Line_sum[1,1] = 6;
		int line = 0;
		int counter_line = Helper.Line_sum(Line_sum, line);
		Console.WriteLine();
		
		int length = 4;
		int length1 = 4;
		int[,] random = Helper.Random(length, length1);
		random = Helper.Table(random);
		int line_cell = 2;
		int Column = 2;
		int counter_AroundCell = Helper.Around_cell(random, line_cell, Column);
		
	}
}
public class Helper
{
	public static int[,] Input(int[,] a)
	{
		return a;
	}
	public static int[,] Random(int length1, int length2)
	{
		Random rnd = new Random();
		int[,] a = new int[length1, length2];
		for (int i = 0; i < a.GetLength(0); i++)
		{
			for (int j = 0; j < a.GetLength(1); j++)
			{
				a[i,j] = rnd.Next(0,10);
			}
		}
		return a;
	}
	public static int[,] Table(int[,] a)
	{
		for (int i = 0; i < a.GetLength(0); i++)
		{
			for (int j = 0; j < a.GetLength(1); j++)
			{
				Console.Write("{0} ", a[i,j]);
			}
			Console.WriteLine();
		}
		return a;
	}
	public static bool Check(int[,] a)
	{
		bool check = true;
		int counter = 0;
		for (int i = 0; i < a.GetLength(0); i++)
		{
			for (int j = 0; j < a.GetLength(1); j++)
			{
				if (a[i,j] != a[i, a.GetLength(1) - 1 - j])
					counter++;
			}
		}
		if (counter != 0)
			check = false;
		return check;
	}
	public static int[,] Main_diagonal(int[,] a)
	{
		for (int i = 0; i < a.GetLength(0); i++)
		{
			for (int j = 0; j < a.GetLength(1); j++)
			{
				if (i == j)
					Console.WriteLine(a[i,j]);
			}
		}
		return a;
	}
	public static int[,] Secondary_diagonal(int[,] a)
	{
		for (int i = 0; i < a.GetLength(0); i++)
		{
			for (int j = 0; j < a.GetLength(1); j++)
			{
				if (i + j == a.GetLength(0) - 1)
					Console.WriteLine(a[i,j]);
			}
		}
		return a;
	}
	public static int Line_sum(int[,] a, int line)
	{
		int counter = 0;
		for (int i = 0; i < a.GetLength(0); i++)
		{
			for (int j = 0; j < a.GetLength(1); j++)
			{
				if (i == line)
					counter += a[i,j];
			}
		}
		Console.WriteLine(counter);
		return counter;
	}
	public static int Column_sum(int[,] a, int Column)
	{
		int counter = 0;
		for (int i = 0; i < a.GetLength(0); i++)
		{
			for (int j = 0; j < a.GetLength(1); j++)
			{
				if (j == Column)
					counter += a[i,j];
			}
		}
		Console.WriteLine(counter);
		return counter;
	}
	public static int Around_cell(int[,] a, int line, int Column)
	{
		int counter = 0;
		for (int i = 0; i < a.GetLength(0); i++)
		{
			 for (int j = 0; j < a.GetLength(1); j++)
			 {
				 if ((i == line || i == line - 1 || i == line + 1) && (j == Column || j == Column - 1 || j == Column + 1))
					 counter += a[i,j];
			 }
		}
		counter = counter - a[line,Column];
		Console.WriteLine(counter);
		return counter;
	}
}

 
using System;
                    
public class Program
{
    public static void Main()
    {
        int[,] Main_diagonal = new int[2,2];
        Main_diagonal[0,0] = 8;
        Main_diagonal[0,1] = 4;
        Main_diagonal[1,0] = 3;
        Main_diagonal[1,1] = 0;
        Main_diagonal = Helper.Main_diagonal(Main_diagonal);
        Console.WriteLine();
        
        int[,] Secondary_diagonal = new int[2,2];
        Secondary_diagonal[0,0] = 2;
        Secondary_diagonal[0,1] = 7;
        Secondary_diagonal[1,0] = 9;
        Secondary_diagonal[1,1] = 3;
        Secondary_diagonal = Helper.Secondary_diagonal(Secondary_diagonal);
        Console.WriteLine();
        
        int[,] Line_sum = new int [2,2];
        Line_sum[0,0] = 9;
        Line_sum[0,1] = 3;
        Line_sum[1,0] = 4;
        Line_sum[1,1] = 6;
        int line = 0;
        int counter_line = Helper.Line_sum(Line_sum, line);
        Console.WriteLine();
        
        int length = 4;
        int length1 = 4;
        int[,] random = Helper.Random(length, length1);
        random = Helper.Table(random);
        int line_cell = 2;
        int Column = 2;
        int counter_AroundCell = Helper.Around_cell(random, line_cell, Column);
        
    }
}
public class Helper
{
    public static int[,] Input(int[,] a)
    {
        return a;
    }
    public static int[,] Random(int length1, int length2)
    {
        Random rnd = new Random();
        int[,] a = new int[length1, length2];
        for (int i = 0; i < a.GetLength(0); i++)
        {
            for (int j = 0; j < a.GetLength(1); j++)
            {
                a[i,j] = rnd.Next(0,10);
            }
        }
        return a;
    }
    public static int[,] Table(int[,] a)
    {
        for (int i = 0; i < a.GetLength(0); i++)
        {
            for (int j = 0; j < a.GetLength(1); j++)
            {
                Console.Write("{0} ", a[i,j]);
            }
            Console.WriteLine();
        }
        return a;
    }
    public static bool Check(int[,] a)
    {
        bool check = true;
        int counter = 0;
        for (int i = 0; i < a.GetLength(0); i++)
        {
            for (int j = 0; j < a.GetLength(1); j++)
            {
                if (a[i,j] != a[i, a.GetLength(1) - 1 - j])
                    counter++;
            }
        }
        if (counter != 0)
            check = false;
        return check;
    }
    public static int[,] Main_diagonal(int[,] a)
    {
        for (int i = 0; i < a.GetLength(0); i++)
        {
            for (int j = 0; j < a.GetLength(1); j++)
            {
                if (i == j)
                    Console.WriteLine(a[i,j]);
            }
        }
        return a;
    }
    public static int[,] Secondary_diagonal(int[,] a)
    {
        for (int i = 0; i < a.GetLength(0); i++)
        {
            for (int j = 0; j < a.GetLength(1); j++)
            {
                if (i + j == a.GetLength(0) - 1)
                    Console.WriteLine(a[i,j]);
            }
        }
        return a;
    }
    public static int Line_sum(int[,] a, int line)
    {
        int counter = 0;
        for (int i = 0; i < a.GetLength(0); i++)
        {
            for (int j = 0; j < a.GetLength(1); j++)
            {
                if (i == line)
                    counter += a[i,j];
            }
        }
        Console.WriteLine(counter);
        return counter;
    }
    public static int Column_sum(int[,] a, int Column)
    {
        int counter = 0;
        for (int i = 0; i < a.GetLength(0); i++)
        {
            for (int j = 0; j < a.GetLength(1); j++)
            {
                if (j == Column)
                    counter += a[i,j];
            }
        }
        Console.WriteLine(counter);
        return counter;
    }
    public static int Around_cell(int[,] a, int line, int Column)
    {
        int counter = 0;
        for (int i = 0; i < a.GetLength(0); i++)
        {
             for (int j = 0; j < a.GetLength(1); j++)
             {
                 if ((i == line || i == line - 1 || i == line + 1) && (j == Column || j == Column - 1 || j == Column + 1))
                     counter += a[i,j];
             }
        }
        counter = counter - a[line,Column];
        Console.WriteLine(counter);
        return counter;
    }
}

Compilation error (line 6, col 7): The type or namespace name 'FluentValidation' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 7, col 7): The type or namespace name 'FluentValidation' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 8, col 7): The type or namespace name 'FluentValidation' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 66, col 37): The type or namespace name 'AbstractValidator<>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 79, col 29): The type or namespace name 'AbstractValidator<>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 94, col 13): The type or namespace name 'PropertyValidatorContext' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 113, col 93): The type or namespace name 'PropertyValidatorContext' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 143, col 89): The type or namespace name 'IRuleBuilderInitial<,>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 144, col 13): The type or namespace name 'AbstractValidator<>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 143, col 23): The type or namespace name 'IRuleBuilderOptions<,>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 150, col 18): The type or namespace name 'IRuleBuilderOptions<,>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 151, col 13): The type or namespace name 'AbstractValidator<>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 149, col 23): The type or namespace name 'IRuleBuilderOptions<,>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 157, col 13): The type or namespace name 'AbstractValidator<>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 159, col 13): The type or namespace name 'IRuleBuilder<,>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 156, col 24): The type or namespace name 'IRuleBuilderOptions<,>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 246, col 60): The type or namespace name 'Severity' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 196, col 26): The type or namespace name 'IPropertyValidator' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 200, col 33): The type or namespace name 'IPropertyValidator' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 70, col 6): The name 'RuleSet' does not exist in the current context
Compilation error (line 83, col 13): The name 'RuleFor' does not exist in the current context
Compilation error (line 84, col 26): The name 'CascadeMode' does not exist in the current context
Compilation error (line 100, col 76): The type or namespace name 'StaticStringSource' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 118, col 76): The type or namespace name 'StaticStringSource' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 162, col 38): The type or namespace name 'ChildValidatorAdaptor' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 208, col 57): The type or namespace name 'StaticStringSource' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 215, col 57): The type or namespace name 'LazyStringSource' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 222, col 57): The type or namespace name 'LazyStringSource' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 229, col 54): The type or namespace name 'StaticStringSource' could not be found (are you missing a using directive or an assembly reference?)

Last Run:	11:46:24 pm
Compile:	0s
Execute:	0.439s
Memory:	0b
CPU:	0s

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