Variables, Storage, and Commands in Programming
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Questions and Answers

Which type of command repeatedly executes a subcommand, known as the loop body?

  • Case-command
  • Conditional command
  • Sequential command
  • Iterative command (correct)

    • In Ada, the if-command can be extended to handle multiple conditions using which keyword?

  • otherwise
  • elsif (correct)
  • else-if
  • elif

    • What is the typical form of a sequential command?

  • C1; C2
  • C1/C2
  • C1, C2
  • C1 C2 (correct)

    • In C and Java, which keyword is used to specify a default action in a case-command?

    <p>default</p> Signup and view all the answers

    What is the net effect of updating local variables in a procedure according to the text?

    <p>No net effect</p> Signup and view all the answers

    What is the typical form of a skip command in Ada?

    <p>&quot;null;&quot;</p> Signup and view all the answers

    In which type of programming languages are commands characteristic?

    <p>Procedural</p> Signup and view all the answers

    What is the meaning of the multiple assignment expression "V1 =  = Vn = E;" in C and Java?

    <p>The value of E is stored in each of V1, , Vn.</p> Signup and view all the answers

    Which PL construct is used to store a value in a variable?

    <p>Assignment</p> Signup and view all the answers

    What does a procedure call achieve its effect by applying?

    <p>Procedures</p> Signup and view all the answers

    What is the purpose of a constructor in a Java class?

    <p>To create and initialize a new object of the class</p> Signup and view all the answers

    In Java, what does a method call with the form 'O.M(...)' do?

    <p>Inspects and updates an existing object</p> Signup and view all the answers

    What does it mean if a class S is a subclass of class C?

    <p>Objects of class S are richer than objects of class C</p> Signup and view all the answers

    What is the net effect of updating local variables in a procedure?

    <p>The updated value is retained after the procedure ends</p> Signup and view all the answers

    What does it mean for a subclass to inherit its superclass's instance variables and methods?

    <p>The subclass shares the same instance variables and methods as the superclass</p> Signup and view all the answers

    In the context of programming, what does encapsulation refer to?

    <p>Making some components of a program unit private</p> Signup and view all the answers

    What does a package represent in programming?

    <p>A named group of components declared for a common purpose</p> Signup and view all the answers

    What is the API of a program unit?

    <p>The public bindings of the program unit</p> Signup and view all the answers

    What are the possible levels of privacy for components in a program unit?

    <p>Private, protected, public</p> Signup and view all the answers

    What does a program unit's API consist of?

    <p>Its public bindings only</p> Signup and view all the answers

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