Programming Languages: Type Systems and Features
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Questions and Answers

Which of the following languages has a static type system?

  • C#
  • Haskell (correct)
  • C
  • Python

    • What is the primary characteristic of a static type system?

  • Types are determined at runtime
  • Macros are used for type declarations
  • Type parameters are used
  • Types are determined at compile time (correct)

    • In the C++ statement const double rate = 3.5;, when is the value of rate bound?

  • Runtime
  • Language design time
  • Link time
  • Compile time (correct)

    • What is the consequence of not deallocating memory in C after using malloc?

    <p>Memory leak</p> Signup and view all the answers

    What is the equivalent feature in Haskell to a generator implemented using the yield keyword in C# or Python?

    <p>Lazy lists</p> Signup and view all the answers

    What is the main reduction rule of the semantic of the λ-calculus?

    <p>β-reduction</p> Signup and view all the answers

    What is the primary difference between the stack and the heap in terms of memory allocation?

    <p>The stack is used for static memory allocation, while the heap is used for dynamic memory allocation.</p> Signup and view all the answers

    In the given C program, which of the following statements is true?

    <p>The heap memory allocated in line 7 will be freed when the process terminates.</p> Signup and view all the answers

    What is the purpose of the free function in the given C program?

    <p>To deallocate memory on the heap.</p> Signup and view all the answers

    What is the type of the head function in Haskell?

    <p>head :: [a] -&gt; a</p> Signup and view all the answers

    What is the purpose of the yield return statement in the given C# generator?

    <p>To return a value from the generator.</p> Signup and view all the answers

    How many times will the yield return statement be invoked when the following code is executed?

    <p>7</p> Signup and view all the answers

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