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Why a function in C# requires "Return type"??

Raga Deepthi G.
25/09/2018 0 0

- Basically , a Method is a piece of code used for the re-usability purpose. 

- Method is of 2 types Function and Procedure

Function is a method which returns a value to the calling place

Function syntax:
 
<return type> <functionname>(<params> [ optional ])
{
      //code
}
 
Function samples : 
 
void Display()
{
     Console.WriteLine("Function which returns nothing");
}
 
note : in the above sample , the Display() returns no value, hence "void" is the return type. "void" means nothing.
 
int Add(int a, int b)
{
      return (a+b);
}
 
note : in the above sample , the Add() is returning the sum of 2 numbers passed to it. Means here it is returning an integer value to the calling place.

 

Procedure is a method which returns nothing to the calling place.

Procedure syntax:

<procedurename>(<params>[optional])

{

    //code

}

Procedure samples:

Display()

{

     Console.WriteLine("Procedure returns no value");

}

Add(int a, int b)

{

     Console.WriteLine("Sum : "+(a+b));

}

Hence, a function always returns a value or void to the calling place and a procedure returns nothing.

C# do not support Procedure. So functions in C# should be defined with the return type.

 

 

 

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