Method in C#

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Method are also called as functions.Method are extremely useful because we write logic once and it is used at many places. A method is a group of statement that together perform a task.Every C# program has at lest one class with a method named main.

Syntax of Method

[Attributes]                                                             <Access Specifier> <Return Type> <Method Name>(Parameter)
{
   Method Body
}

1. Access Specifier: Access Specifiers defines the scope of a class member. A class member can be variable or function. In C# there are five types of access specifiers are available. We will talk about Access specifier in letter video session.
2. Return type: A method may return a value. The return type is the data type of the value the method returns. If the method is not returning any values, then the return type is void.
3. Method name: Method name is a unique identifier and it is case sensitive. 
4. Parameter: Enclosed between parentheses, the parameters are used to pass and receive data from a method. .
5. Method body: This contains the set of instructions needed to complete the required activity.

Example 

public class SimpleMath
{
public static int Add(int x, int y)
{
return x + y;
}
public static int Multiply(int x, int y)
{
return x * y;
}
}

Here is the test program:

// TestSimpleMath.cs

using System;

public class TestSimpleMath
{
public static void Main(string[] args)
{
int sum = SimpleMath.Add(5, 7);
int product = SimpleMath.Multiply(5, 7);
Console.WriteLine("sum = {0}", sum);
Console.WriteLine("product = {0}", product);
}
}

O/p

sum = 12
product = 35

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