Values, Types, Expressions, and Constructions in Programming
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Questions and Answers

What is the type of value that constructs a composite value from its component values?

  • Composite value (correct)
  • Recursive value
  • Primitive value
  • Literal value

In Java, what are the component values used in object constructions?

  • Literals
  • Pointers
  • Subexpressions (correct)
  • References

What type of expression is a PL construct that may be evaluated to yield a value?

  • Iterative expression
  • Conditional expression
  • Recursive expression
  • Composite expression (correct)

In Ada, what are the component values used in record and array constructions?

<p>Literals (C)</p> Signup and view all the answers

What distinguishes composite values from primitive values?

<p>Complexity of construction (D)</p> Signup and view all the answers

Which PLs allow functions as first-class values?

<p>Haskell (C)</p> Signup and view all the answers

In most PLs, how is a function call typically written when the function has a single argument?

<p>F(E) (C)</p> Signup and view all the answers

How can applying a unary operator to its operand be essentially viewed in terms of function calls?

<p>It is equivalent to *(E1, E2) (C)</p> Signup and view all the answers

Which type of expression chooses from several subexpressions using a condition?

<p>Case-expression (A)</p> Signup and view all the answers

What is the important principle related to the representation of values in a computer?

<p>Values of different types must be represented in a uniform way. (D)</p> Signup and view all the answers

Which statement about composite variables is NOT true?

<p>The component variables of a composite variable can only be updated selectively. (C)</p> Signup and view all the answers

In Ada, what defines a dynamic array?

<p>The array index range is not fixed at all and may change with each assignment. (B)</p> Signup and view all the answers

In Java, what distinguishes flexible arrays from static and dynamic arrays?

<p>Flexible arrays allow their index range to change whenever a new array value is assigned. (A)</p> Signup and view all the answers

What defines a static array in C?

<p>The array length must be explicitly stated during declaration. (D)</p> Signup and view all the answers

What distinguishes simple variables from composite variables?

<p>Composite variables have the same structure as a value of that type. (B)</p> Signup and view all the answers

In the context of storage in imperative or object-oriented programming languages, what does it mean for a variable to be a container for a value?

<p>The variable is a pointer to the location in memory where the value is stored (C)</p> Signup and view all the answers

What characterizes a simple value in the context of storage in programming languages?

<p>It is typically a primitive value or a pointer (B)</p> Signup and view all the answers

In the abstract model of storage described, what does an allocated storage cell contain?

<p>Either a simple value or undefined (B)</p> Signup and view all the answers

What distinguishes composite variables from simple variables in terms of storage?

<p>Composite variables occupy multiple allocated storage cells (A)</p> Signup and view all the answers

In which type of programming languages does a variable stand for a fixed but unknown value, as in mathematics?

<p>Functional and logic programming languages (A)</p> Signup and view all the answers

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