Concepts Of Programming Languages
Concepts Of Programming Languages
12th Edition
ISBN: 9780134997186
Author: Sebesta, Robert W.
Publisher: Pearson,
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Chapter 6, Problem 20PS
Program Plan Intro

Static type checking:

  • A language is statically-typed if the type of a variable is known at compile time.
  • It allows many type errors to be caught early in the development cycle.
  • Static typing usually results in compiled code which executes more quickly because when the compiler knows the exact data types which are in use, it can produce optimized machine code.
  • It evaluate only the type information which can be determined at compile time, but are able to verify that the checked conditions hold for all possible executions of the program, which eliminated the need to repeat type checks every time the program is executed.

Dynamic type checking:

  • It is the process of verifying the type safety of a program at runtime.
  • Most type-safe languages include some form of dynamic type checking, even if they also have a static type checker.
  • The reason for this is that many useful features or properties are difficult or impossible to verify statically.

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Refer to page 80 for problems on white-box testing. Instructions: • Perform control flow testing for the given program, drawing the control flow graph (CFG). • Design test cases to achieve statement, branch, and path coverage. • Justify the adequacy of your test cases using the CFG. Link: [https://drive.google.com/file/d/1wKSrun-GlxirS3IZ9qo Hazb9tC440 AZF/view?usp=sharing]
Refer to page 10 for problems on parsing. Instructions: • Design a top-down parser for the given grammar (e.g., recursive descent or LL(1)). • Compute the FIRST and FOLLOW sets and construct the parsing table if applicable. • Parse a sample input string and explain the derivation step-by-step. Link: [https://drive.google.com/file/d/1wKSrun-GlxirS31Z9qoHazb9tC440 AZF/view?usp=sharing]
Refer to page 20 for problems related to finite automata. Instructions: • Design a deterministic finite automaton (DFA) or nondeterministic finite automaton (NFA) for the given language. • Minimize the DFA and show all steps, including state merging. • Verify that the automaton accepts the correct language by testing with sample strings. Link: [https://drive.google.com/file/d/1wKSrun-GlxirS31Z9qo Hazb9tC440AZF/view?usp=sharing]
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