Welcome to CodeEasy Elementary C# course! You are now at the very beginning of the fascinating story which will take you to the world of programming. You don't need any special programming skills or any prior knowledge to start it! It can be useful to learn first, 

. Follow Teo’s story and you will learn the basics of C# programming step-by-step. 

basic data types: bool, int, char, double, float;

My first C# program

Console output

Introduction to variables and int type

String type introduction

Brave new world

Computer hardware introduction

C# naming convention

Comments in C#

C# problems practice

The Mission

C# program structure

If statement

Visual Studio extension

Back to the streets

Bool type introduction

Console readline

Who is who

C# compilation process

Introduction to for loop

Find the basement

Introduction to double type

Introduction to char type

Talk in the big kitchen

C# Entry Level

Learn C# program structure; basic data types: bool, int, char, double, float; if statement; console input and output; for loop; string manipulations.

C# Entry Level from Scratch for Absolute Beginners | CodeEasy

I noticed that people around me sometimes glance at me from time to time. I think this is because they know I'm a time traveler, and it also gives me this feeling, that I'm not from here. I'm different. And sometimes it is hard to be different. But it is not much I can do about it, so I'll just do my best then.

The final task of the morning session was completed and lunch had been eaten, we settled in for the second part of Ritchie's lesson about new types. "We'll take it easy this afternoon," Ritchie said, "and teach you about one more type today."

It represents one character: a letter, a digit, or any other symbol that you can imagine. 

To represent a char value in C#, you must enclose it in single quotes: 

. Here is an example of how to create a char variable." And with that, Ritchie returned to the whiteboard.

You can read a char from the console using the method 

variable to the console, you can use the Console.WriteLine(...) method, the same, again, as with the other types we know.

"Well..." he began, "You could say that a 

. As you all know, strings consist of characters. In C#, you can get a char by requesting the data from one place in the string. Consider a string: 

' out of the string by appending [0] at the end of the string like this: 

. You can get the second character out of the string by appending [1] at the end of the string: 

 th character of the string by appending [ 

 -1] at the end of the string: "Resistance"[ 

This opens up some unique capabilities. You can use an 

You can also perform other functions on a char, such as checking whether it's an uppercase letter, a lowercase letter, a digit, etc. Here is a 

Ritchie put down the marker and erased the whiteboard. "Now, hold on to your seats for this next statement." He continued, speaking slowly and purposefully, "A 

is represented as a number in the computer memory.

You could hear a pin drop as we tried to decipher this. Someone in the back asked the question we were all thinking: "You just said that a char is a character. How can it be a number?"

It doesn't sound very easy, I know. But a 

 variables are also represented by numbers. You have to remember - a computer processor can only decipher numbers. It doesn't understand characters and strings. They were created to make 

 lives easier. When you write the following,

"Do we need to know how the char is stored Ritchie?" asked someone from the crowd. 
"You do, at least to know how to use 

." 
"You mean Console.ReadLine()?" 
"No, I meant 

. While similar, this method reads only one 

 from the console and returns it to you, rather than a 

 like Console.ReadLine() does. Here is an example:"

You probably noticed that in the code above, 

 represents the number that is really stored in the memory for that char. For example, 

In C#, the correspondence between the real character and its numerical representation is made by the 

. Basically, it binds characters to numbers. You can easily find in the network 

 representation, say 97, to a real character like 'a', you can use the 

The code above waits for the user to input a character (it even can be several characters) and press Enter. The program then reads the Unicode code of the character and converts it to a char type. Try it yourself!

It writes whatever you give to it to the screen, but does 

 switch to a new line after each write like Console.WriteLine(...) does. You can use Console.Write(...) with strings, ints, chars, etc. the same as you did with Console.WriteLine(...).

After working through all of these examples, some people were beginning to pack up and leave the kitchen. A whole day of learning had gone by, and we had a whole new set of types to use in our code! Before anyone had reached the doors, Ritchie shouted one more lesson over the noise.

The comparison is done in alphabetical order:

, which means that you should only compare uppercase letters with uppercase letters and lowercase letters with lowercase ones. Here are a couple of examples." 

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Lection in the Big Kitchen