return keyword
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Does return send a value back from a function to where it was called?
2. Does code after a return statement inside a function still run?
3. Should the return keyword be followed by the value being sent back?
4. Can a returned value be stored in a variable when the function is called?
5. Is RETURN written in uppercase in VCAA pseudocode?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1return result | Areturn should not use parentheses around its value | |
| 2return num * num | Boutput ← addNumbers(3, 4) | |
| 3A keyword that sends a value back and ends a function's execution | Creturn | |
| 4Storing the value sent back by a function in a variable | DThe keyword should be written in lowercase as return, not RETURN | |
| 5define isEven(num) IF num MOD 2 = 0 THEN RETURN TRUE END IF end function | ECalculates a value and sends it back immediately | |
| 6define getMax(a, b) IF a > b THEN return a ELSE return(b) END IF end function | FSends the value stored in result back from the function |
C
Definitions
return
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
______ result
2.
define square(num)
______ num * num
end function
3.
define isPositive(num)
IF num > 0 THEN
______ TRUE
END IF
end function
4.
define multiply(x, y)
______ x * y
end function
5.
output ← addNumbers(3, 4)
__ this stores the returned value
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
define addNumbers(a, b)
B
result ← a + b
C
give result
D
end function
Question 2
A
define isEven(num)
B
IF num MOD 2 = 0 THEN
C
RETURN TRUE
D
END IF
E
end function
Question 3
A
define multiply(x, y)
B
return x * y
C
end function
D
output ← multiply(2, 3)
Question 4
A
define getMax(a, b)
B
IF a > b THEN
C
return a
D
ELSE
E
return(b)
F
END IF
Question 5
A
define greet(name)
B
return "Hello, " + name
C
end function
D
message ← greet("Sam")
Answer Key
return keyword
Section A: Quick Questions
Q1
B — True
Q2
A — False
Q3
A — True
Q4
A — True
Q5
B — False
Section B: Match the Pairs
Q1
return result → Sends the value stored in result back from the function
Q2
return num * num → Calculates a value and sends it back immediately
Q3
A keyword that sends a value back and ends a function's execution → return
Q4
Storing the value sent back by a function in a variable → output ← addNumbers(3, 4)
Q5
define isEven(num)
IF num MOD 2 = 0 THEN
RETURN TRUE
END IF
end function → The keyword should be written in lowercase as return, not RETURN
Q6
define getMax(a, b)
IF a > b THEN
return a
ELSE
return(b)
END IF
end function → return should not use parentheses around its value
Section C: Definitions
Q1
return — A keyword that sends a value back from a function to where it was called, ending the function's execution at that pointSection D: Fill in the Blanks
Q1
return resultQ2
define square(num)
return num * num
end functionQ3
define isPositive(num)
IF num > 0 THEN
return TRUE
END IF
end functionQ4
define multiply(x, y)
return x * y
end functionQ5
output ← addNumbers(3, 4)
// this stores the returned valueSection E: Spot the Error
Q1
C — The keyword to send a value back from a function is return, not give.
Q2
C — The keyword should be written in lowercase as return, not RETURN.
Q3
D — There is no incorrect line here — all lines follow correct return keyword syntax.
Q4
E — return should not use parentheses around its value; it should be written as return b.
Q5
D — There is no incorrect line here — all lines follow correct return keyword syntax.