Chapter 53 - Programming basics

Question 1

What is an algorithm?

Answer 1

» A set of rules or a sequence of steps specifying how to solve a problem

Question 2

What is pseudocode?

Answer 2

» Shows the important aspects of coding without an syntaxes

Question 3

What is a comment?

Answer 3

» Allows you to document your code and explains what the code does

Question 4

What is an integer?

Answer 4

» A whole number

Question 5

What is a real/float?

Answer 5

» Number with a fractional part which can be negative

Question 6

What is a character?

Answer 6

» A letter or a number

Question 7

What is a string?

Answer 7

» Anything enclosed in quote marks or double quotes

Question 8

What does the round function do?

Answer 8

» Round the number

Question 9

What does the div function do?

Answer 9

» Return the whole numer

Question 10

What does mod do?

Answer 10

» Finds the remainder

Question 11

What does len(string) do?

Answer 11

» Returns the length of a string

Question 12

What does string.find(str) do?

Answer 12

» Determines if str occurs in string
» Returns index if found
» Returns -1 otherwise

Question 13

What does ord(“a”) do?

Answer 13

» In this case returns the integer value of a character
» 97 in this example

Question 14

What does char(97) do?

Answer 14

» Returns the character represented by an integer

Question 15

What is concatentation?

Answer 15

» Where you join 2 string together
» Do it by using + operator

Question 16

What are the 5 string conversion operations?

Answer 16

» int()
» str()
» float()
» date()

Question 17

What are variables?

Answer 17

» Are identifiers given to memory locations whose contents will change during the course of the program

Question 18

What are constants?

Answer 18

» Values which never changes while the program is being run