(Master)IPC144 Quiz #2 Notes - Logic ● Structured Program sets of simple constructs each of which have one entry point and one exit point ● Sequence

(Master)IPC144 Quiz #2 Notes - Logic ● Structured Program...

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Logic Structured Program : sets of simple constructs, each of which have one entry point and one exit point. Sequence: Simplest example of a structured construct. Code Block: Set of statements enclosed in a pair of curly braces to be executed sequentially. Preliminary Design During design of a programming solution helpful to outline steps involved. 2 Well established techniques: Pseudo-coding: Set of shorthand notes in human language that itemizes key steps in the sequence of instructions that produce a programming solution. Flow charting: set of conventional symbols connected by arrows, illustrate flow of control through programming solution. Selection Constructs: C language supports 3 selection constructs: Optional path Alternative paths Conditional expression See pg 39 of book Optional Path: Ex. if (condition) sequence Simplest selection construct executes sequence only if certain condition is satisfied. Alternate Paths: 2 ways of describing alternate paths: Binary select construct Multiple selection construct Binary Selection: Executes one set of alternative sequences
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if (condition) sequence else (condition) sequence Multiple Selection: For 3 or more alternative paths, append an “if else” construct to “else” keyword: Ex. if (condition) sequence else if (condition) sequence else sequence Compound Conditions: Condition in selection construct may be a compound condition Takes form of logical expression i.e. “3>=X && 5-3<=2” Case-by-Case: Case-by-Case Selection Construct: compares a condition, simple/compound,
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