MIT 6.00SC Lecture 2

gerarddolan —  February 18, 2013 — Leave a comment

mitx_med

“MIT OpenCourseWare (OCW) is a web-based publication of virtually all MIT course content. OCW is open and available to the world and is a permanent MIT activity.”

The following are my notes for this program:

Introduction to Computer Science & Programming

Guttag, John. 6.00SC Introduction to Computer Science and Programming,Spring 2011. (Massachusetts Institute of Technology: MIT OpenCourseWare), http://ocw.mit.edu (Accessed 18 Feb, 2013). License: Creative Commons BY-NC-SA

MIT 600 Lecture 2:
Operators and operands; statements; branching, conditionals, and iteration

Lecturers: Eric Grimson & John Guttag
Course Web site

 

 

Lecture 02

2 Fundamental for designing programs* some representation of fundamental data
* a way to give instructions to the computer

Primitive Data =
* numbers
* strings
for these we have a value & a type

Combine in expressions:
* operand
* operators

Interp:
* Eval
* Prints

Script – no printing unless explicit

Type checking – different languages fall on a spectrum of Strong to Weak

Type Discipline:
a) checking out operators or procedures to see what they do under different circumstances
b) what type of arguements or operands to apply to operators

Operator Precedence:
when in doubt use paranthesis

Variables & Values:
done by assigning an Assignment statement

Where can you Variables?
used anywhere that its legal to use the value

Statements =
legal commands that Python can interpret
i.e. Print, Assignment

Sequence of 28 keywords excluded in Python

Straight line programs vs
Branching Programs; is something that can change the order of a program based on a test

Colon identifies a block
Equal sign is an assignment

Test Cases
Have one for each path of the code

Boolean Combination
and, or, not

Be Sociable, Share!

gerarddolan

Posts

No Comments

Be the first to start the conversation.

Leave a Reply

Text formatting is available via select HTML. <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>

Time limit is exhausted. Please reload CAPTCHA.

*