ENGINEER 1D04 Lecture Notes - Lecture 2: Scientific Notation, Floating Point

• School: McMaster University
• Department: Engineering (General)
• Course: ENGINEER 1D04
• Professor: Doug Down

Document Summary

Floating point numbers- rational numbers in scientific notation. Values: information stored and manipulated by computer programs. The mathematical value 0, can be represented in python by: An expression is a syntactic entity that denotes a value: Atomic expression : an identifier (eg. x or true. Compound expression : formed by applying an operator to other expressions (eg. 2+3 or range(10)). A type is a syntactic entity that denotes a collection of values of similar form. Variables- a name to bound a value the name serves as an expression that denotes the value in python, names are identifiers. ) or a literal (eg. 2. 3, cat or true name = expr. Eg. x = 2 + 3 variables are readable and writable. A constant is a linguistic entity whose meaning is fixed eg. pi, c, true, false. It is up to the programmer to make sure the constant does not become a variable.