Gain insights into fundamental and advanced C# programming concepts. Learn about conditional statements, loops, methods, arrays, classes, inheritance, interfaces, and delegates through practical challenges.

This course introduces you to fundamental programming concepts in C#, one of the most popular languages in the world. The highly interactive course begins with a simple Hello world program and proceeds on to cover common concepts such as conditional statements, loop statements, and methods in C#. It also reflects upon the idea of arrays as well as the power they give to the programmer to write better code. Finally, it dives deeper in order to teach about advanced concepts such as classes, inheritance, interfaces, and delegates in C# through interactive challenges and exercises.

C# for Programmers: A Practical Guide

# Problem Statement 

You will first build **three** *classes*: 
* `Mammal` (*parent class*) 
* `Dog` (*derived class*)
* `Cat` (*derived class*)

`Dog` and `Cat` class will inherit from `Mammal`. 

In the exercise you have to implement the following:

* `Mammal` class:
  * Has one `protected` **property**, `age`, of the mammal.
  * A **default** *constructor*
  * A *constructor* that takes the `age` of mammal as input and sets it.
  * The method `Eat()` that displays "Mammal eats food".
  * Method `Speak()` that displays "Mammal speaks mammalian!!".
  * Method `get_Age()` which returns the `age` of the mammal.

* `Dog` class:
  * Inherits all the *members* from `Mammal` class.
  * It's constructor calls on the Mammal class constructor with parameters.
  * Implement all `member` functions of `Mammal` class for `Dog` class.
  * `Eat()` should display **"Dog eats meat"**.
  * `Speak()` should display **"Dog barks: ruff! ruff!"**.
  * `get_Age()` should *return* Dog's **age**.

* `Cat` class:
  * Inherits all the *members* from `Mammal` class.
  * It's constructor calls on the Mammal class constructor with parameters.
  * Implement all methods of `Mammal` class for `Cat` class.
  * `Eat()` should display **"Cat eats meat"**.
  * `Speak()` should display **"Cat meows: Meow! Meow!"**.
  * `get_Age()` should *return* Cat's **age**.

>**Hint**: Think along the direction of `virtual` methods and their use to implement the **same** *method* for **different** *classes* separately.

Here's a sample result which you should get.

**Input:** 
```
Dog(5);
Cat(4);
```

**Expected Output:**

This exercise requires you to implement the concept of virtual functions to display information about two base classes.

Introduction

Variables and Casting

Operators

Conditions

Loops

Arrays

Methods

Exception Handling

Classes

OOP in C#

Delegates

C# Exam

Exercise 2: Displaying Message Using Virtual Functions

Problem Statement