“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
