輸入10個數，輸入出大值

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication3
{
class Program
{
static void Main(string[] args)
{
int i = 0;
int max=0;
max = Convert.ToInt32(Console.ReadLine());

while (i < 9)
{
i++;
int num;
num = Convert.ToInt32(Console.ReadLine());

if (num > max)
{
max=num;
}

}
Console.WriteLine(max);

Console.ReadLine();


}
}
}

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication6
{
class Program
{
static void Main(string[] args)

{
MaxNumber mymax;
mymax = new MaxNumber();
int my = mymax.Max();
Console.WriteLine(my);
Console.ReadLine();
}
}


class MaxNumber
{
public int Max()
{
int i = 0;
int max = 0;
max = Convert.ToInt32(Console.ReadLine());

while (i < 9)
{
i++;
int num;
num = Convert.ToInt32(Console.ReadLine());

if (num > max)
{
max = num;
}

}
return (max);

}

}
}