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Plus Codes are like street addresses for people or places that don’t have one. Instead of addresses with street names and numbers, Plus Codes are based on latitude and longitude and displayed as numbers and letters. With a Plus Code, people can receive deliveries, access emergency, and social services, or… Continue Reading Web – Find the Plus Codes address.

The tool website called codepen.io is a very useful tool in which you can test HTML, CSS, and JavaScript source code with the related libraries. In this short tutorial, I show you I translated a simple example from Google Books A.P.I. in the codepen.io web interface. The basic example of… Continue Reading Web – Google Book A.P.I. and codepen.

This website is a good tool for reporting and detects when technology fails. This online tool is available in many countries and has an android application on Google Play. Downdetector collects status reports from a series of sources, including Twitter and reports submitted on our websites and mobile apps. Our… Continue Reading Web – The downdetector online tool and android application.

The tutorial for today is about a math problem named happy number. I used my repl.it account to test it. The algorithm of this program is simple: To find out if a number is happy, replace the number by the sum of the squares of its digits. Repeat the process… Continue Reading C# – First steps with C# and .NET – part 020 .

Google is coming up with a new feature called Google Developer Profile. They inform us about this option as follows: Google Developer Profile, is a way to learn about Google technologies and unlock achievements. Your profile captures your achievements with badges and saves your progress as you complete pathways, which… Continue Reading Web – Google Developer Profile.

Another C# example with constructors in a derived class using the repl.it online tool for C# . Another good online tool can be found on this web page. You can run it here with the command:

1
mono main.exe

 The source code is this:

C#
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using System;
 
namespace InheritanceApplication {
class Ship {
 
double ship_width;
double ship_length;
 
// Default constructor for class Ship
public Ship()
{
Width = Length = 0.0;
}
 
// Constructor for Ship get width and length of Ship
public Ship(double w, double l)
{
Width = w;
Length = l;
}
 
// Properties for Width
public double Width
{
get {
   return ship_width;  
}
 
set {  
  ship_width = value < 0 ? -value : value;  
}
}
            // Properties for Length
public double Length
{
get {  
   return ship_length;  
}
 
set {  
  ship_length = value < 0 ? -value : value;
}
}
            // display Ship status
public void ShipStatus()
{
Console.WriteLine("The ship width and length in metters are: Width "
+ Width + "| Length " + Length);
}
}
 
// A derived class of Ship named Interstellar_Ship.
class Interstellar_Ship : Ship {
 
string Interstellar_Engine;
 
// A default constructor of Interstellar_Ship.
public Interstellar_Ship()
{
Interstellar_Engine = "Velocity";
}
 
// Constructor base
public Interstellar_Ship(string s, double w, double l)
: base(w, l)
{
Interstellar_Engine = s;
}
 
// Return area of Interstellar_Ship.
public double Area()
{
return Width * Length;
}
 
// Display engine of Interstellar_Ship's.
public void DisplayInterstellar_Engine()
{
Console.WriteLine("Interstellar_Ship engine for " + Interstellar_Engine);
}
}
 
// Inheriting Interstellar_Ship class
class Speed_Interstellar_Ship : Interstellar_Ship {
 
int speed_ship;
 
// Constructor
public Speed_Interstellar_Ship(int speed, string s,
  double w, double l)
: base(s, w, l)
{
speed_ship = speed;
}
 
// Display the speed.
public void Display_Speed()
{
Console.WriteLine("Speed in km/s is: " + speed_ship);
}
}
 
// Driver Class
class GFG {
 
// Main Method
public static void Main()
{
Speed_Interstellar_Ship first_ship = new Speed_Interstellar_Ship(131000,  
   "catafest Velocity Engine", 1000.33, 176.3);
 
Speed_Interstellar_Ship second_ship = new Speed_Interstellar_Ship(176000,
   "mythcat Hybrid Variable-impulse Chemical", 177.0, 441.0);
 
Console.WriteLine("Details of first ship: ");
first_ship.DisplayInterstellar_Engine();
first_ship.ShipStatus();
first_ship.Display_Speed();
 
Console.WriteLine("Area of ship: " + first_ship.Area());
Console.WriteLine();
 
Console.WriteLine("Details of second_ship: ");
second_ship.DisplayInterstellar_Engine();
second_ship.ShipStatus();
second_ship.Display_Speed();
 
Console.WriteLine("Area of ship: " + second_ship.Area());
}
}
}

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