UNIT 2.2 PROGRAMMING TECHNIQUES

Q1: The following is not true about variable names (1-4)

• They must be descriptive
• They must be in capital letters
• They can’t start with numbers or contain spaces
• They point to memory locations

Q2: In an assignment operation, this appears on the right hand side (6-9)

• Label for a variable that is destination of data
• Multiple variables that are destinations for data
• Source variables or operations
• The assignment operator

Q3: The following is not a valid constant (1-4)

• SPACE
• PI
• UserName
• WORDLIMIT

Q4: Which of the following is a valid keyword for output? (1-4)

• PRINT
• SHOW
• DISPLAY
• INPUT

Q5: Consider the following expression: a:=b. This means (6-9)

• a will always be equal to b
• b is being renamed into a
• value of memory location a gets copied to memory location b
• value of memory location b gets copied to memory location a

Q6: Which of the following is not a valid data type? (1-4)

• Real
• String
• Character
• Fraction

Q7: Quotation marks around a variable’s identifier imply (1-4)

• It is an integer
• It is a string
• It is a Boolean
• It is a real

Q8: The multiplication table is best displayed using this data type (4-6)

• Boolean
• Character
• Integer
• Real

Q9: This variable type can only have True or False values (1-4)

• Boolean
• Integer
• String
• Character

Q10: Casting refers to: (4-6)

• Boolean algebra
• Rounding of reals
• Converting between variable data types
• Printing out of the program’s results