// -------------------------------------------------------------------	
// Department of Electrical and Computer Engineering
// University of Waterloo
//
// Student Name:      Aren Patel
// UWDIR Userid:      aspatel
//
// Assignment:        Programming Assignment 1
// Submission Date:   September 18, 2008
// 
// I declare that this program is my original work.
//
// -------------------------------------------------------------------


using System;

class PA1
{
  static void Main()
    {
                
        // Constants of resistivity that are given in ohms/km,
        //  obtained from the original information.       
        const double res14 = 8.286d;
        const double res18 = 20.95d;
        
        
        // Make blank line for space - makes the program look better.
        // Tells the user what the program is.
        // Make blank line for space - makes the program look better.
        Console.WriteLine("");
        Console.WriteLine("");
        Console.WriteLine("");
        Console.WriteLine("Calculator for the Voltage Drop in a " +
        "Length of Speaker Wire");
        Console.WriteLine("");
        
        
        // Request for user's input.
        Console.WriteLine("What is the length of the speaker " +
        "wire in metres?");
        
        
        // Takes the input, ensures it's stored as double (lengthm).
        // Takes the stored double (lengthm) coverts to km and stores
        //  as another double (lengthkm).
        // Make blank line for space - makes the program look better.
        double lengthm = double.Parse(Console.ReadLine());
        double lengthkm = lengthm/1000d;
        Console.WriteLine("");
        
        
        // Request for the user's input.
        Console.WriteLine("What is the resistance of the speaker " +
        "in Ohms?");      
        
        
        // Takes the input, ensures it's stored as double (resspeak).
        // Make blank line for space - makes the program look better.
        double resspeaker = double.Parse(Console.ReadLine());
        Console.WriteLine("");
        
        // Store to memory the resistance of 14 & 18 AWG wire,
        //  calculated by the given formula (Resistivity × Length)
        double rwire14 = lengthkm*res14;
        double rwire18 = lengthkm*res18;
        
        
        // Output to user the calculated resistance of the specified
        //  length of 14 & 18 AWG wire, round to two decimal places.
        Console.WriteLine("The resistance of {0} metres of 14 AWG " +
        "speaker wire is {1:F2} Ohms", lengthm, rwire14);
        Console.WriteLine("The resistance of {0} metres of 18 AWG " +
        "speaker wire is {1:F2} Ohms", lengthm, rwire18);
        
        
        // Make blank line for space - makes the program look better.
        Console.WriteLine("");
        
        
        // Output to user the % voltage drop of the specified length
        //  of 14 & 18 AWG wire, rounded to one decimal place.
        Console.WriteLine("The voltage drop for 14 AWG wire is " + 
        "{0:F1}%", (rwire14/(rwire14+resspeaker))*100d);
        Console.WriteLine("The voltage drop for 18 AWG wire is " + 
        "{0:F1}%", (rwire18/(rwire18+resspeaker))*100d);
        
        
        // Make blank line for space - makes the program look better.
        Console.WriteLine("");
        Console.WriteLine("");
        
         
        Console.WriteLine("Press any key to exit.");
        Console.ReadLine();
        
    }
}