INPUT and OUTPUT statements

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Quick Questions

Shade in the A or B circle for each question.

1. Which line stores a value typed by the user in the variable Number?

A INPUT Number

B OUTPUT Number

2. Which line displays the message Total is followed by the value of Total?

A OUTPUT "Total is ", Total

B INPUT "Total is ", Total

3. Which is the correct way to show several items in one OUTPUT statement?

A OUTPUT "Score: " Score " points"

B OUTPUT "Score: ", Score, " points"

4. A program should ask the user for their age and then store it. Which order is best?

A OUTPUT "Enter your age" then INPUT Age

B INPUT Age then OUTPUT "Enter your age"

5. What does the statement INPUT Number do when the program runs?

A It displays the value of Number on the screen

B It waits for the user to type a value and stores it in Number

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
1INPUT Number		AWaits for the user to type a value and stores it in the variable Number
2OUTPUT "Total is ", Total		BINPUT must be followed by a variable name, not a message. Use OUTPUT for the message, then INPUT Number to store the value.
3Prompt the user with OUTPUT before asking for a value with INPUT		COUTPUT "Enter a number" INPUT Number
4Display several items on one line by separating them with commas		DThe items are not separated by a comma. It should be OUTPUT "Total is ", Total.
5INPUT "Enter a number"		EDisplays the message Total is followed by the value stored in Total
6OUTPUT "Total is " Total		FOUTPUT "Average is ", Average

Definitions

INPUT and OUTPUT

Fill in the Blanks

Complete each line of code by filling in the missing parts.

______ "Total is ", Total

_____ Number

OUTPUT "Enter a number" INPUT ______ OUTPUT "You typed ", Number

INPUT Price OUTPUT "Price is ", _____

______ "Enter your age" INPUT Age

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A DECLARE Number : INTEGER

B INPUT 5

C OUTPUT "You typed ", Number

Question 2

A DECLARE Total : INTEGER

B Total <- 10 + 5

C OUTPUT "Total is " Total

Question 3

A OUTPUT Enter your age

B INPUT Age

C OUTPUT "Age is ", Age

Question 4

A OUTPUT "Enter a number"

B INPUT "Num"

C OUTPUT "Double is ", Num * 2

Question 5

A DECLARE Name : STRING

B INPUT Name

C OUTPUT "Hello ", "Name"

Answer Key

INPUT and OUTPUT statements

Section A: Quick Questions

A — INPUT Number

A — OUTPUT "Total is ", Total

B — OUTPUT "Score: ", Score, " points"

A — OUTPUT "Enter your age" then INPUT Age

B — It waits for the user to type a value and stores it in Number

Section B: Match the Pairs

INPUT Number → Waits for the user to type a value and stores it in the variable Number

OUTPUT "Total is ", Total → Displays the message Total is followed by the value stored in Total

Prompt the user with OUTPUT before asking for a value with INPUT → OUTPUT "Enter a number" INPUT Number

Display several items on one line by separating them with commas → OUTPUT "Average is ", Average

INPUT "Enter a number" → INPUT must be followed by a variable name, not a message. Use OUTPUT for the message, then INPUT Number to store the value.

OUTPUT "Total is " Total → The items are not separated by a comma. It should be OUTPUT "Total is ", Total.

Section C: Definitions

INPUT and OUTPUT — INPUT stores a value the user types into a variable. OUTPUT displays a message or value on screen. Show several items by separating them with commas.

Section D: Fill in the Blanks

OUTPUT "Total is ", Total

INPUT Number

OUTPUT "Enter a number"
INPUT Number
OUTPUT "You typed ", Number

INPUT Price
OUTPUT "Price is ", Price

OUTPUT "Enter your age"
INPUT Age

Section E: Spot the Error

B — INPUT must be followed by a variable name that will store the typed value. You cannot input into the value 5. It should be INPUT Number.

C — When OUTPUT shows several items, they must be separated by commas. A comma is missing after the message. It should be OUTPUT "Total is ", Total.

A — A message to display must be written in double quotes. Without them the words look like variable names. It should be OUTPUT "Enter your age".

B — The variable name after INPUT must not be in quotes. Quotes make it a piece of text, not a variable that can store the value. It should be INPUT Num.

C — Putting Name in quotes outputs the word Name, not the value the user typed. A variable must be written without quotes: OUTPUT "Hello ", Name.