Complex Expressions

[jab2005]

Hi!

I am Jesse., 17 yrs old & a freshman student in a university..
Just want you to know that I am really new in C Programming & really quite confused with it..

Anyway, got some questions regarding the subject..

I understand that in C Programming, has this Complex Expressions.
What does this Complex Expression really defines?
What does its role in C Programming?
What about 'Sequence Point'?

Please share your knowledge about this..
Thanks a lot!!