C#•2d ago

✅ Method declaration, outside Main Vs inside main

Hello guys, consider the following code:

C#
using System;

namespace Learning
{
    class Program
    {
        static void Main(string[] args)
        {
            DisplayRandomNumbers();
            
            void DisplayRandomNumbers()
            {
                Random random = new Random();
                for (int i = 0; i < 5; i++)
                {
                    Console.WriteLine(random.Next(1,10));
                }
            }
        }

        
    }
}

C#
using System;

namespace Learning
{
    class Program
    {
        static void Main(string[] args)
        {
            DisplayRandomNumbers();
            
            void DisplayRandomNumbers()
            {
                Random random = new Random();
                for (int i = 0; i < 5; i++)
                {
                    Console.WriteLine(random.Next(1,10));
                }
            }
        }

        
    }
}

At first, I wrote the DisplayRandomNumbers() method outside the Main method but I got an error telling me that I can't call the DisplayRandomNumbers from a static context. Can someone explain why I got this error and why if I put the method inside the main method itself, it works fine. What's happening behind the scenes here?

14 Replies

Unknown User•2d ago

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FakerOP•2d ago

Ah, we assume that every method created inside main is also static in nature? even though we didn't use the static keyword ?

Unknown User•2d ago

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FakerOP•2d ago

yep, I know from Java, that static means we don't need an instance of a class (an object) to call a method

Unknown User•2d ago

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FakerOP•2d ago

ah yeah my bad

Unknown User•2d ago

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FakerOP•2d ago

yep sorry

Unknown User•2d ago

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FakerOP•2d ago

if we use top level statement, here we must explicitly use the keyword static? I tried it using top level statements, work fine without using the static keyword, but as a good practice, we should include it?

Unknown User•2d ago

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FakerOP•2d ago

yeah I see any function declared inside another function, like DisplayRandomNumbers() inside name, "inherits" from the main context, like static access ?

Unknown User•2d ago

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FakerOP•2d ago

yep I see, thanks !

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Programming

✅ Method declaration, outside Main Vs inside main

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