Class 14: Operators and Precedence

Back to IEEE Floating Point Representation. On to Pause for Breath.

This outline is also available in PDF.

Held: Monday, 20 September 2010

Summary: We consider a variety of C's important operators.

Related Pages:

EBoard.
Reading: Review K&R 2.

Notes:

Warning: Your class mentor will be unavailable on Tuesday and Wednesday this week.
Don't forget the Town Hall meetings today!
Reading for tomorrow: 3.1-3.3.
Reminder: Review session Friday!
Are there questions on Assignment 4? I know that some of you have questions about stacks.

Overview:

IEEE Floating Point, Continued.
C's Wealth of Operators.
Some Precedence and Other Examples.
Group Exercise.

IEEE Floating Point Numbers, Revisited

We'll wrap up our discussion of IEEE floating point numbers.

Operations in C

A wide variety.
Basic binary math: +, -, *, /, %
Basic unary math: +, -
Increment/decrement operators: ++, --
Logical operators !, ||, &&
Comparison operators: <, <=, >, >=, ==, !=
Binary bitwise operators: &, |, <<, >>
Assignment operators: =, +=, -=, *=, /=, %amp;=, &=, ^=, |=, <<=, >>=
And more!

Group Exercise: Precedence

As a group, write a series of programs that help us determine the precedence order of the various operations.
That is, your programs will consist of expressions that have different values in different precedence orders.
Your goal is to cover as many operations as possible.

Back to IEEE Floating Point Representation. On to Pause for Breath.

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Related Courses: [CSC195 2003S (Rebelsky)] [CSC161 2009F (Coahran)] [CSC161 2010S (Walker)]
Misc: [SamR] [ISO] [GNU Coding Standards]

Disclaimer: I usually create these pages on the fly, which means that I rarely proofread them and they may contain bad grammar and incorrect details. It also means that I tend to update them regularly (see the history for more details). Feel free to contact me with any suggestions for changes.

This document was generated by Siteweaver on Wed Dec 8 10:57:06 2010.
The source to the document was last modified on Fri Aug 13 15:41:46 2010.
This document may be found at http://www.cs.grinnell.edu/~rebelsky/Courses/CSC161/2010F/Outlines/outline.14.html.

Samuel A. Rebelsky, rebelsky@grinnell.edu