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AP Computer Science 2.1 Review of the Basics 230 Views


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Description:

APCS: Review of the Basics Drill 2, Problem 1. What is the output of the code segment?

Language:
English Language

Transcript

00:00

Thank you We sneak and here's your shmoop du jour

00:05

brought to you by a lack of case But that's

00:09

the least of your problems right now Okay what is

00:14

the output of the following code segment and hear the

00:17

potential answers came through All right oz waiver and let's

00:24

roll Right Well to answer this bad boy we should

00:27

know the difference between print and print line statements Know

00:31

how to use relational operators and know what exactly is

00:35

returned when we knew so Operational operators are extremely useful

00:39

Incoming A variety of flavors for every situation way Use

00:42

them to determine if one piece of data is greater

00:45

than less than equal to or not equal to another

00:48

and return a true or false feather you depending on

00:50

the outcome But most of them are selfish Planter let's

00:53

Take a quick tour too Equal signs checks like two

00:57

operations are equal In other words you can use it

01:01

on strings in andrew's practically whatever an exclamation point and

01:06

an equal sign checks If two operandi are not evil

01:11

greater than and less than on there you go You've

01:13

already met can driven or equal to and less than

01:17

or equal tio r yet right here That's it All

01:20

right Well in the case of this question we've got

01:22

a couple of fairly simple mathematical statements To compare his

01:25

hundred twenty six less than three hundred fourteen months one

01:28

thousand three hundred thirty seven one part will the result

01:32

of a mod operation Thiss kind of mod operation is

01:36

the remainder after division that is one hundred five by

01:39

twenty six used three with the remainder of twenty two

01:43

So there's our value for the left side of the

01:46

comparison Three hundred fourteen minus two thousand three hundred seven

01:49

is your negative One thousand twenty three So bottom line

01:53

is twenty two less than negative one thousand twenty three

01:57

We'll not even close pal We're gonna get a false

02:00

shmoop That leaves us with c and d And the

02:04

difference between the two is a line break between rick

02:07

Cake is and false The code snap It has two

02:11

different types of prints taken The first is we print

02:14

which simply prints its contents to the console screen There

02:18

thie invisible cursor remains at the end of the statement

02:21

The second is a print line statement which prince its

02:23

contents then starts a new line Shocking it's Useful for

02:27

keeping an ongoing log advance to scroll through for example

02:31

All right So which is it security Since print line

02:34

starts the new line at the end of the statement

02:36

the new line won't begin until after false has been

02:40

printed He tried to trick us by suggesting that the

02:43

new line starts before the statement But we cannot be 00:02:46.913 --> [endTime] so easily fooled So we're going with me

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