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C# Function

Function is a block of code that has a signature. Function is used to execute statements specified in the code block. A function consists of the following components:

Function name: It is a unique name that is used to make Function call.

Return type: It is used to specify the data type of function return value.

Body: It is a block that contains executable statements.

Access specifier: It is used to specify function accessibility in the application.

Parameters: It is a list of arguments that we can pass to the function during call.

C# Function Syntax

Access-specifier, parameters and return statement are optional.

Let's see an example in which we have created a function that returns a string value and takes a string parameter.

C# Function: using no parameter and return type

A function that does not return any value specifies void type as a return type. In the following example, a function is created without return type.

Output:

This is non parameterized function

C# Function: using parameter but no return type

Output:

Hello Rahul Kumar

A function can have zero or any number of parameters to get data. In the following example, a function is created without parameters. A function without parameter is also known as non-parameterized function.

C# Function: using parameter and return type

Output:

Inside Show Function
Hello Rahul Kumar
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