Guided Inquiry 8: zyBook Ch. 3.14–3.20 + specified exercieses

Overview

The purpose of this reading and exercise set is give you more experience with branching in C++,  including how to deal with floating point comparisons, and to introduce a few helpful functions for working with characters and strings.

Learning Objectives

Basic learning objectives

You are responsible for learning and demonstrating proficiency in the following objectives prior to the next class meeting:

• test if a character is alphabetic, a digit, or whitespace
• perform string operations such as adding new characters to a string, replacing portions of a string, concatenating strings, finding matches in a string, and extracting portions of a string
• recognize a conditional expression (often called "he ternary operator")
• explain why floating point numbers cannot be compared the same as integers
• predict what parts of a Boolean expression will be calculated based on short-circuiting

Advanced learning objectives

You should demonstrate mastery of the following objectives by the end of the next class meting through the in-class activities:

• use character and string operations in a program
• use and be able to explain a conditional expression within a program
• write accurate Boolean expressions to compare floating point numbers in a program
• write Boolean expressions to leverage short-circuiting to avoid unnecessary computations

Resources

Read Ch. 3 of the zyBook (sections 3.14–3.20). You may work with others on the exercises. If you have questions, please talk with a classmate or post your question to Piazza under the "gi 8" tag.

Exercises

Complete the following. There is nothing to submit via Canvas; zyBook shows me what you've completed and when.

• carry out at least  80% of the "Participation Activities" (the orange ones) in the reading
  
  • you can see how many of the participation activities you've done for a section or chapter using the "Reporting" tab on the main CSC160 zyBook page
  • ask me or a classmate for help if you can't find it
• attempt the following "Challenge Activities"; spend ~20 minutes on each (it's okay if you don't get the solution)
  
  • 3.14.1: String with digit
  • 3.15.2: Name song
  • 3.16.2: Conditional assignment
  • 3.17.1: Floating-point comparison: Print Equal or Not equal

If you have a question while you are doing this, please post to the class Piazza board with the "gi 8" tag.