using System;

namespace _6Methods

{

class Program

{

//METHOD BASICS

//Go to the class Methods.cs to start this lesson.

public static void Main(string[] args)

{

Methods myMethods = new Methods();

var result = myMethods.GetHello("Jen"); //Method invocation

Console.WriteLine(result);

myMethods.DoSomething(); //Method has "void" return type, so nothing will be returned.

//PARAMETERS

Parameters myParameters = new Parameters();

int value1 = 5; //Used as arguments below

int value2 = 16;

int sum = myParameters.Add(value1, value2); //Sum == 21

Console.WriteLine(sum);

//OUT KEYWORD

//Occassionally we want to pass out multiple values from a single method.

//We can pass parameters using the *out* keyword to specify this.

string intString = "5";

bool hasValue = int.TryParse(intString, out int intResult); //Result is now 5

Console.WriteLine(hasValue.ToString());

if (hasValue)

{

Console.WriteLine(intResult);

}

//REF KEYWORD

int total = 17;

int nextNumber = 2;

myParameters.Sum(ref total, nextNumber); //total is now 19

myParameters.Sum(ref total, 6); //total is now 25

Console.WriteLine(total);

//IN KEYWORD

double pi = 3.14159;

var circumference = myParameters.GetCircumference(4.5, pi);

Console.WriteLine(circumference);

//PARAMS KEYWORD

var totalPrice = myParameters.GetTotalPriceForSeats(90, 91, 92, 93, 94);

Console.WriteLine(totalPrice); //460

//OPTIONAL PARAMETERS

int byOne = myParameters.Increment(10); //11

Console.WriteLine(byOne);

int byFive = myParameters.Increment(10, 5); //15

Console.WriteLine(byFive);

//NAMED ARGUMENTS

//The parameter "height" is listed first, but by using the parameter names

//as labels for the arguments, we can pass them out of order.

var volume = myParameters.GetPyramidVolume(baseArea: 12, height: 4);

Console.WriteLine("Volume is " + volume.ToString());

}

}

}