Introduction
Default parameter
include in c# 4.0 version. You can, however, provide a code generator that
creates a set of overloads from a declaration containing default arguments.
Optional parameters are defined at the end of the parameter list, after any
required parameters in a function. When you call to a function and you are
not pass other value to default. Then default parameter value use in a
function.
Example
using
System;
using
System.Collections.Generic;
using
System.Linq;
using
System.Text;
namespace
optional_parameter_in_c_sharp
{
class
parameter
//create class
{
//create a function with
two parameter, x and y, where y assign default value 5.5
public
double sum(double
x, double y = 5.5)
{
return x + y;
//return sum of x+y
}
}
class
Program
{
static
void Main(string[]
args)
{
parameter
obj = new
parameter();
//create object
//call to sum
function, when two value given to function
Console.WriteLine("Sum
of given two value: {0}\n",obj.sum(4.5,8));
//call to sum
function, when one value given to function
Console.WriteLine("Sum
of given one and other default value: {0}",
obj.sum(4));
Console.ReadLine();
}
}
}
Output
![output.jpg]()