为什么我的程序返回“CS0120：非静态字段、方法或属性‘Question3.primechec(BigInteger)’需要一个 object 引用”？

Question

im new to C# and ive been trying to solve project euler question number 3 and got the following error: i understand i need to decler a new BigInt before i use it, but i just cant figure out the syntax. would love to get some help!

using System;
using System.Numerics;
namespace primes
{
    class Question3
    {
       static void Main()
       {
        BigInteger Memash = 600851475143 ;
        for(BigInteger i = 100 ; i <= Memash ; i++)
            {
                if(primechec(i))
                    {
                        Console.Write("this number is prime: " + i);
                        if(Memash % i == 0)
                        {
                            Console.Write(i);
                        }
                    }
            }
       } 

       public bool primechec(BigInteger Naor)
       {
        for(int j = 2 ; j <= Naor ; j++)
        {
            if(Naor % j == 0)
            {
                return false;
            }
        }
        return true;
       }
    }
}

Answer 1

The problem is that your Main method is static , so it can't call instance methods in the same class. You need to declare primechec static as well, so you're calling a static method from a static method.