GolamMostafa:
There are so many little things that make life meaningful!
The code is even easier to read and understand if you put every code block in curly brackets even if there is only one statement in the block, and put each curly bracket alone on its own line before doing the Ctrl + T
This makes the code blocks really obvious and avoids problems where you mean to execute more than one line as a result of a test but without the curly brackets only one statement is conditionally executed whilest subsequent ones are executed unconditionally.