How to Program in C# : Variables and Data Types (Part 2)

Variables and Data Types (Part 2)

Welcome back my friends !!

Today we'll go through the second part of this C# series
Let's start!!

Last time we left off with Console.WriteLine and Console.ReadKey now we'll combine these with some variables and comments.

Comments are useful for multiple reasons: for exemple they can help other developpers read your code or help you in case you

forgot what a line does or things like those.
Speaking of variables ...these are the 3 main data types of variables
(we'll see the rest of them as we procede into this series):

  • int (integers) : This variable defines only non-decimal numbers (like 1, 3, 4, 5, 259, 4000 etc...).
  • var : this is an implicit way of defining data types , unlike int or string (meaning a indirect way or "generic" if you wish).
  • string : this variable only accepts text.

Here's an exemple of all 3 of them:(you may want to zoom in with your browser since it's quite small but everything's commented)

always remember the " ; "(it's called "semi-colon") symbol at the end of the variables declaration line.
(There's a semi-colon at the end of every expression statement
and declaration statement, so you MUST NOT put the semi-colon at the end of every line)*

So...All types of variables can be "entered" or defined in 2 ways:

1) The first by first declaring the data type and then assign a value to the variable like this:

int x;
x = 2;

2) The second by declaring the data type and assigning the variable a value on the same line like this:

int x = 2;

Both of them are right.

That's all for now.
Thank you for reading


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