Understanding Bindings in Programming

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Questions and Answers

Which category of variables are nameless (abstract) memory cells allocated and deallocated by explicit run time instructions written by the programmer?

  • Static variables
  • Stack-dynamic variables
  • Explicit heap-dynamic variables (correct)
  • Implicit heap-dynamic variables

What is the range of statements in which a variable is visible known as?

  • Elaboration
  • Scope (correct)
  • Binding
  • Allocation

In which scoping method are names bound to nonlocal variables based on spatial relationships?

  • Implicit scoping
  • Static scoping (correct)
  • Dynamic scoping
  • Spatial scoping

Which category of variables are bound to heap storage only when they are assigned values?

<p>Implicit heap-dynamic variables (C)</p>
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What is the process that involves storage allocation and binding indicated by a declaration statement?

<p>Elaboration (A)</p>
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Which type of variable remains bound to memory cells from program execution start to end?

<p>Static variables (D)</p>
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What is the range of statements in which a variable can be referenced in known as?

<p>Scope (C)</p>
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'Explicit heap-dynamic' and 'implicit heap-dynamic' variables differ in their:

<p>Value assignment mechanism (D)</p>
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Stack-dynamic variables have their storage bindings created after program execution begins.

<p>False (B)</p>
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Explicit heap-dynamic variables are bound to memory cells before program execution starts.

<p>False (B)</p>
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Implicit heap-dynamic variable attributes are bound every time they are assigned values.

<p>True (A)</p>
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Static scoping is the same as dynamic scoping.

<p>False (B)</p>
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The scope of a variable is the same as the range of statements in which the variable is visible.

<p>True (A)</p>
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Dynamic scoping is based on spatial relationships between subprograms.

<p>False (B)</p>
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Stack-dynamic variables are always statically bound.

<p>False (B)</p>
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Explicit heap-dynamic variables have names.

<p>False (B)</p>
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Implicit heap-dynamic variables get bound to heap storage regardless of value assignment.

<p>False (B)</p>
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Static scoping binds names to nonlocal variables based on calling sequence of subprograms.

<p>False (B)</p>
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