C#, can Main()' s class have instance / static variable? If so, how do you access?

[recherche]

Hi!

Is the following program valid, although it compiles and executes successfully?

// params modifier // used to declare array parameter
 
// value type, no constructor
 
using System;
 
class MyClass
{
    public int minimumMethod(params int[] array) 
    {
        int m;        
 
        if(array.Length == 0)
        {
            Console.WriteLine("Error: no arguments");
            return 0;
        }
 
        m = array[0];
        for(int i=1; i<array.Length; i++)
            if(array[i] < m)
                m = array[i];
 
        return m;
 
    }
}
 
class MainClass
{
    int a = 5;
    int b = 6;
    int min; 
 
    static void Main()
    {  
        MainClass mn = new MainClass();
 
        MyClass mc = new MyClass();
 
        mn.min = mc.minimumMethod(mn.a, mn.b); 
 
        Console.WriteLine("The minimum value is = {0} \n", mn.min);
 
        mn.min = mc.minimumMethod(mn.a, mn.b, -7);
 
        Console.WriteLine("The minimum value is = {0} \n", mn.min);
 
 
        mn.min = mc.minimumMethod(6, 7, -7, 9, -7);
 
        Console.WriteLine("The minimum value is = {0} \n", mn.min);
 
        int[] args = {55, 7 , -7 , -88, 10}; 
        mn.min = mc.minimumMethod(args); 
        Console.WriteLine("The minimum value is = {0} \n", mn.min);
    }
}
 
/* 
Output:
The minimum value is = 5
 
The minimum value is = -7
 
The minimum value is = -7
 
The minimum value is = -88
*/

[Frinavale]

Hi!

Is the following program valid, although it compiles and executes successfully?

Hi Recherche,

I've moved your question to the .NET Forum.
The .NET Articles section is reserved for "how-to" articles and other useful information and is not meant for questions. You should post your question in the .NET Forum section in the future to receive help with your problem. (Blue Menu: Forums->.NET)

Your question sounds as if you were asking us to answer a homework question for you. It is up to you to decide if the program is valid or not according to what its supposed to accomplish.
The experts on this site are more than happy to help you with your problems but they cannot do your assignment for you.
Please read the Posting Guidelines and particularly the Coursework Posting Guidelines.

MODERATOR

[Plater]

I maintain any program that "works" is "valid".
And since Frinny pointed out this could be a homework I can't be detailed, but I would suggest looking at where the arguments get passed into the function are handled and make some decisions.

[recherche]

Not at all! It was my own query. Anyways, thanks!

[r035198x]

Not at all! It was my own query. Anyways, thanks!

You still haven't told us whether you think it's valid or not and your reasons.

[recherche]

Sorry for the tardy reply!

Maybe, I should have rephrased my query. There's no doubt that it is valid, because in case of programs that contain a single class, the instance / static variable is contained in the Main()'s class. Hence Main()' s class can have instance / static variable. The reason for my query is that I never came across a program (with more than 1 class) where the Main()' s class have instance / static variable! Perhaps, a convention or rule?

Furthermore, I don't know any forum where I can ask such "unconventional " queries as I am a self-taught person.

[Frinavale]

Sorry for the tardy reply!

Maybe, I should have rephrased my query. There's no doubt that it is valid, because in case of programs that contain a single class, the instance / static variable is contained in the Main()'s class. Hence Main()' s class can have instance / static variable. The reason for my query is that I never came across a program (with more than 1 class) where the Main()' s class have instance / static variable! Perhaps, a convention or rule?

Furthermore, I don't know any forum where I can ask such "unconventional " queries as I am a self-taught person.

A static variable retains its value during program execution.

When you declare one within your method it becomes a local variable to that method (or class)...it's only accessible there.

Once that method is finished executing the variable retains its value for the next time the method is called.

To declare one in Main() would be kind of redundant, because main is only called once and the lifetime of a static variable lasts only until the program's life ends.

(maybe try posting such queries in the Software Development forum?)

-Frinny