Problem Solving, Algorithm Development and Program Design

Which algorithm correctly calculates the average and sum of two user inputted numbers and displays the result of both?

• read a

  read b

  c=a+b

  d=a+b/2

  print c, d

• read a

  read b

  c=a+b

  d=c/2

  print c, d

• read a

  c=a+b

  d=(a+b)/2

  print c, d

• read a

  read b

  d=c/2

  c=a+b

  print c, d

Which construct should be used to count from 1 to 5 and print each number consecutively?

• IF-THEN-ELSE

• FOR-DO-ENDFOR

• WHILE-ENDWHILE

• IF-THEN-ELSE-IF

Which pseudocode prints out the two times table for the numbers 1 to 6?

• For number = 1 to 6 do

  product =number *2

  print number

  Endfor

• Display "Number", "Product"

  While number <= 6 do

  product =number *2

  print number, product

  Endwhile

• Display "Number", "Product"

  For number = 1 to 6 do

  product =number *2

  print number, product

  Endfor

• Display "Number", "Product"

  While number = 1 to 6 do

  product =number *2

  print number, product

  Endwhile

Which of these is an example of a language a computer would understand?

• Binary

• Pascal

• C

• All the above

Before a computer can understand a program it must be...

• Translated into its machine code.
• Translated into a high level language.
• Translated into a low level language.
• Converted into binary.

Which of these is an example of a debugging technique

• Documentation

• Execution

• Error Checking

• Dry run

Which of the following is not a high level programming language?

• Assembly

• C

• Java

• Pascal

Which of the following is the definition of a variable?

• A container which is used to store values such as the number of attempts a person tries to log on to a network.
• A language that is similar to a real programming language, but is easier for humans to understand although it doesn’t actually run on a computer. It can easily be converted to a regular programming language.
• A value that cannot be altered by the program during normal execution: the value stays the same. 
• Messages to explain to others, and often to remind yourself, what the code is intended to do. 

What command would you use to create prompting instructions in Pascal?

• print

• read

• char

• integer

A user enters the letter A during the execution of a program. How would you describe that data?

• Character constant

• String constant

• Integer variable

• Character variable