Hungarian notation

Name:

Date:

Class:

Quick Questions

Shade in the A or B circle for each question.

1. Which variable name uses Hungarian notation to store a student's name as text?

A strName

B nameStr5

2. Which prefix would you use for a variable that holds a whole number such as an age?

A blnAge

B intAge

3. Which name best suits a variable holding the price of an item, such as 4.50?

A fltPrice

B strPrice

4. Which name best suits a variable that stores True or False for whether a student passed?

A intPassed

B blnPassed

5. Where does the data type prefix go in Hungarian notation?

A At the start of the name, like intScore

B At the end of the name, like scoreInt

Match the Pairs

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

Left column		Right column
1strFirstName		AfltPrice
2blnPassed		BThe int prefix is wrong because the value is text. It should use str, as in strStudentName.
3An integer variable for a student's age using Hungarian notation and camel casing		CA string variable, shown by the str prefix before the descriptive name FirstName
4A float variable holding a decimal price, with the data type prefix first		DThe name has no data type prefix. Hungarian notation needs one, such as intAge.
5intStudentName = "Ava"		EA Boolean variable holding True or False, shown by the bln prefix
6age = 16		FintStudentAge

Definitions

Hungarian notation

Fill in the Blanks

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

___Name = "Ava"

___Age = 16

___Price = 4.5

___IsMember = False

blnPassed = True if _________: print("Well done")

Spot the Error

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

Question 1

A strName = "Mia"

B intAge = 16

C intPrice = 4.50

D print(strName, fltPrice)

Question 2

A intScore = 18

B intTotal = 20

C strPassed = intScore >= 10

D print(blnPassed)

Question 3

A strFirst = "Ali"

B strlast = "Khan"

C strFull = strFirst + strLast

Question 4

A fltPrice = 12.50

B qtyInt = 3

C fltTotal = fltPrice * intQty

D print(fltTotal)

Question 5

A strName = "Zoe"

B intMark = 62

C fltAvg = 62.5

D boolPassed = intMark >= 50

Answer Key

Hungarian notation

Section A: Quick Questions

A — strName

B — intAge

A — fltPrice

B — blnPassed

A — At the start of the name, like intScore

Section B: Match the Pairs

strFirstName → A string variable, shown by the str prefix before the descriptive name FirstName

blnPassed → A Boolean variable holding True or False, shown by the bln prefix

An integer variable for a student's age using Hungarian notation and camel casing → intStudentAge

A float variable holding a decimal price, with the data type prefix first → fltPrice

intStudentName = "Ava" → The int prefix is wrong because the value is text. It should use str, as in strStudentName.

age = 16 → The name has no data type prefix. Hungarian notation needs one, such as intAge.

Section C: Definitions

Hungarian notation — Starting a variable name with a short data type prefix, then a descriptive name, such as strName, intAge, fltPrice or blnPassed.

Section D: Fill in the Blanks

strName = "Ava"

intAge = 16

fltPrice = 4.5

blnIsMember = False

blnPassed = True
if blnPassed:
    print("Well done")

Section E: Spot the Error

C — The value 4.50 is a decimal number, so the prefix must be flt, not int. The line should be fltPrice = 4.50.

C — The comparison gives True or False, which is a Boolean. The prefix should be bln, so the name should be blnPassed, not strPassed.

B — After the prefix, the descriptive name must start with a capital letter (camel casing). It should be strLast. The other lines also refer to strLast.

B — In Hungarian notation the data type prefix goes at the START of the name, not the end. It should be intQty.

D — The agreed prefix for a Boolean variable is bln, not bool. The line should be blnPassed = intMark >= 50.