please explain c sharp sum method implementation in main

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C#

namespace CommandLine
{
    class Program
    {
        int a = 10, b = 10, c;
        public void add()
        {
            c = a + b;
            
        }
        static void Main(string[] args)
        {
            
            Console.WriteLine("additon:",c);
           
        }
    }
}

//shows error i am new to .Net please explain how to add two numbers and print sum

Posted 17-Sep-13 7:09am

Member 10280208

Updated 17-Sep-13 7:15am

abbaspirmoradi

v2

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Comments

Richard C Bishop 17-Sep-13 13:10pm

"I am new to dot net please explain how to add two numbers and print sum" is not an error message. More info.

[no name] 17-Sep-13 13:18pm

You need to add the "static" keyword to your variable declarations and the add method declaration
static int a = 10, b = 10, c;
public static void add()
{
c = a + b;

}

4 solutions

Solution 3

You need to call the add method to get the result. You also need to learn how to format strings with parameters, and how to use parameters in methods. I would strongly suggest you get a book on C# and work through it to learn the basics.

.NET Book Zero[^] is a very good online primer.

Posted 17-Sep-13 7:21am

Richard MacCutchan

Solution 4

First thing, "shows error i am new to .Net please explain" would not be a statement of a problem. A simple Google[^] search would provide you millions of result,so you probably don't try that.

Now the second thing, suggestions provided by ThePhantomUpvoter and abbaspirmoradi are quite good,you can follow that.I just see you another way to do it with just 2 lines of code that could add 2 integer numbers.See:

C#

class Program
{
    //int a = 10, b = 10, c;
    public static int add(int a, int b)
    {
        return a + b;
    }
    static void Main(string[] args)
    {
        Console.WriteLine("additon:" + add(10,10));
    }
}

So i changed your void add() method to static int so that it can return a value and just call it inside the Main to print the result.

Cheers!
Shuvro

Posted 17-Sep-13 7:43am

ridoy

Solution 1

try

C#

Console.WriteLine("addition:" + c);

Posted 17-Sep-13 7:17am

woopsydoozy

Comments

ridoy 17-Sep-13 13:28pm

so you think this is right?! do you check inside your code before posting it?

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abbaspirmoradi · Accepted Answer · 2013-09-17T07:21:00

I just correct your code.this was easy.but my friend if you new in major first try and try .this
is clear if you have got error at first.don't worry.many book exist try with them.

look at this are:

http://www.apress.com/9781430210337/[^]

http://freecomputerbooks.com/Programming-C-Sharp-for-Beginners.html[^]

C#

namespace CommandLine
{
    class Program
    {
     
 static int c = 0, a = 10, b = 10;

        public static int add(int a1, int b1)
        {
            return c = a1 + b1;
        }

        private static void Main(string[] args)
        {
            c = add(a, b);
            Console.WriteLine("additon:{0}", c);
            Console.ReadLine();

        }
    }
}