using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Q180343
{
class Program
{
//Type of Duck – Use enum to represent this value
enum DuckType { Rubber = 0, Mallard = 1, Redhead = 2 };
public interface IShowDetail
{
void ShowDetails();
}
class Duck : IShowDetail
{
private double weight;
private int numberWings;
private DuckType duckType;
/// <summary>
/// Constructor
/// </summary>
public Duck() { }
/// <summary>
/// Constructor with arguments
/// </summary>
/// <param name="weight"></param>
/// <param name="numberWings"></param>
/// <param name="duckType"></param>
public Duck(double weight, int numberWings, DuckType duckType)
{
this.weight = weight;
this.numberWings = numberWings;
this.duckType = duckType;
}
/// <summary>
/// Show details
/// </summary>
public virtual void ShowDetails()
{
if (duckType == DuckType.Mallard)
{
Console.WriteLine("Mallard duck:");
}
if (duckType == DuckType.Rubber)
{
Console.WriteLine("Rubber duck:");
}
if (duckType == DuckType.Redhead)
{
Console.WriteLine("Redhead duck:");
}
Console.WriteLine("Weight: {0}", weight);
Console.WriteLine("Number of wings: {0}", numberWings);
}
}
class RubberDuck : Duck
{
public RubberDuck(double weight, int numberWings, DuckType duckType)
: base(weight, numberWings, duckType)
{
}
public override void ShowDetails()
{
base.ShowDetails();
Console.WriteLine("Rubber ducks don’t fly and squeak.");
}
}
class MallardDuck : Duck
{
public MallardDuck(double weight, int numberWings, DuckType duckType)
: base(weight, numberWings, duckType)
{
}
public override void ShowDetails()
{
base.ShowDetails();
Console.WriteLine("Mallard ducks fly fast and quack loud.");
}
}
class RedheadDuck : Duck
{
public RedheadDuck(double weight, int numberWings, DuckType duckType)
: base(weight, numberWings, duckType)
{
}
public override void ShowDetails()
{
base.ShowDetails();
Console.WriteLine("Redhead ducks fly slow and quack mild.");
}
}
static void Main(string[] args)
{
//Create ducks
IShowDetail[] ducks = new IShowDetail[3];
ducks[0] = new RubberDuck(12, 2, DuckType.Rubber);
ducks[1] = new MallardDuck(9, 2, DuckType.Mallard);
ducks[2] = new RedheadDuck(15, 4, DuckType.Redhead);
//Show details of a duck, i.e. when you call for e.g. ShowDetails() method of a duck, duck should print its traits.
for (int i = 0; i < 3; i++)
{
ducks[i].ShowDetails();
Console.WriteLine();
}
Console.ReadLine();
}
}
} Write, Run & Share C# code online using OneCompiler's C# online compiler for free. It's one of the robust, feature-rich online compilers for C# language, running on the latest version 8.0. Getting started with the OneCompiler's C# compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C# and start coding.
OneCompiler's C# online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.
using System;
namespace Sample
{
class Test
{
public static void Main(string[] args)
{
string name;
name = Console.ReadLine();
Console.WriteLine("Hello {0} ", name);
}
}
}
C# is a general purpose object-oriented programming language by Microsoft. Though initially it was developed as part of .net but later it was approved by ECMA and ISO standards.
You can use C# to create variety of applications, like web, windows, mobile, console applications and much more using Visual studio.
| Data Type | Description | Range | size |
|---|---|---|---|
| int | To store integers | -2,147,483,648 to 2,147,483,647 | 4 bytes |
| double | to store large floating point numbers with decimals | can store 15 decimal digits | 8 bytes |
| float | to store floating point numbers with decimals | can store upto 7 decimal digits | 4 bytes |
| char | to store single characters | - | 2 bytes |
| string | to stores text | - | 2 bytes per character |
| bool | to stores either true or false | - | 1 bit |
datatype variable-name = value;
When ever you want to perform a set of operations based on a condition or set of few conditions IF-ELSE is used.
if(conditional-expression) {
// code
}
else {
// code
}
You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.
Switch is an alternative to If-Else-If ladder.
switch(conditional-expression) {
case value1:
// code
break; // optional
case value2:
// code
break; // optional
...
default:
// code to be executed when all the above cases are not matched;
}
For loop is used to iterate a set of statements based on a condition.
for(Initialization; Condition; Increment/decrement) {
// code
}
While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
while(condition) {
// code
}
Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.
do {
// code
} while (condition);
Array is a collection of similar data which is stored in continuous memory addresses. Array values can be fetched using index. Index starts from 0 to size-1.
data-type[] array-name;
Method is a set of statements which gets executed only when they are called. Call the method name in the main function to execute the method.
static void method-name()
{
// code to be executed
}