passing values between classes

I'm a beginner in programming and I'm studying the basics.
You are trying to add up one class and display the results in another class.
I think I can pass it by argument, but I can't write the code and I can't understand it in the middle.
Please give me some advice.Thank you.

Add here

class GetValue
{
    public static void Calc(int add)
    {
        inta = 3;
        intb = 4;

        add = 3 + 4;
    }
}

// Displaying Values          
namespacePraceticeConsoleApp
{
　　class program
    {
        static void Main (string[]args)
        {
            GetValue value = new GetValue();
        }
    }
}

2022-09-30 11:38

3 Answers

Give the arguments to add up and return the result in a return statement.
For static methods, you do not need to create an instance with new.
I think there are many other ways to do it, but here is an example of how to do it as a basic way.

using System;

class Calc
{
    Received public static int Add (inta, intb) // 2 arguments
    {
        return a+b;// return the result added
    }
}

namespacePraceticeConsoleApp
{
    class program
    {
        static void Main (string[]args)
        {
            Console.WriteLine (Calc.Add(3,4)); // Add using the Calc class Add method.
        }
    }
}

2022-09-30 11:38

(I'm about to learn & haven't touched it for a while)but) If I were you, I would write as follows.

 Omit Using System;//namespace description
class GetValue
{
    public static void Calc(inta, intb) // Receive the number you want to add...
    {    
        int result = a+b; // Add…
        Return with return result; // return statement
    }
}

// Displaying Values          
namespacePraceticeConsoleApp
{
　　class program
    {
        static void Main (string[]args)
        {
            int result = GetValue.Calc(3,4); // Pass value and return result
            Console.WriteLine(result); // View
        }
    }
}

For static, you do not need to instantiate with new

2022-09-30 11:38

If you are studying the basics, I think it would be more difficult to use constructors instead of Static, so I will post it.

using System;

namespace experiment
{
    class program
    {
        // Computational class
        public class Calculate
        {
            // Class Fields
            private int Value1;
            private int Value 2;

            // Addition Method
            public int Addition() = > Value1 + Value2;

            // substituted the fields in the class with argument constructor.
            public Calculate (intval1, intval2)
            {
                Value1 = value1;
                Value2 = value2;
            }
        }

        static void Main (string[]args)
        {

            varcalc = new Calculate(1,2);
            Console.WriteLine(calc.Addition());

            Console.Read();
        }
    }
}

The Addition method uses the lambda expression, but another solution is the format below.
If the logic is just a single-line method, I think this is better for ease of viewing, so I adopted the lambda formula in the text.

public int Addition()
{
    return Value 1 + Value 2;
}

2022-09-30 11:38

If you have any answers or tips

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