Concepts Of Programming Languages
12th Edition
ISBN: 9780134997186
Author: Sebesta, Robert W.
Publisher: Pearson,
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Expert Solution & Answer
Chapter 5, Problem 11RQ
Explanation of Solution
Static-dynamic variable:
A variable that is allocated statically and the lifetime of which extends across the entire runtime of the program is called a static variable.
Stack-dynamic variable:
A stack-dynamic variable is bound to the machine memory after the declaration statement has been executed and is deallocate after the procedure returns.
Advantages and disadvantages of stack-dynamic variables:
Memory from the run-time stack is allocated for stack dynamic variables. ALGOL 60, FORTRAN 77 and FORTRAN 90 use stack-dynamic variables. In C and C++ all local variables are by default stack-dynamic variables.
Explicit heap-dynamic variables:
Explicit heap-dynamic variables are anonymous memory locations in the machine memory that are allocated or deallocate by the explicit instructions from the programmer. These are generally referenced through a pointer or a reference.
Advantages of explicit heap-dynamic variables:
Explicit heap-dynamic variables make it more convenient to construct dynamic structures, such as linked lists and trees, whose elements grow and decrease during execution of the program...
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Chapter 5 Solutions
Concepts Of Programming Languages
Ch. 5 - Prob. 1RQCh. 5 - Prob. 2RQCh. 5 - Prob. 3RQCh. 5 - Which category of C++ reference variables always...Ch. 5 - Prob. 5RQCh. 5 - Prob. 6RQCh. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - What are the advantages and disadvantages of...Ch. 5 - Prob. 10RQ
Ch. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - How is a reference to a nonlocal variable in a...Ch. 5 - What is the general problem with static scoping?Ch. 5 - What is the referencing environment of a...Ch. 5 - Prob. 16RQCh. 5 - What is a block?Ch. 5 - What is the purpose of the let constructs in...Ch. 5 - What is the difference between the names defined...Ch. 5 - Prob. 20RQCh. 5 - Prob. 21RQCh. 5 - What are the advantages of named constants?Ch. 5 - Which of the following identifier forms is most...Ch. 5 - Prob. 2PSCh. 5 - Write a simple assignment statement with one...Ch. 5 - Prob. 4PSCh. 5 - Describe a situation when a history-sensitive...Ch. 5 - Consider the following C program void fun (void) {...Ch. 5 - Consider the following skeletal C program: void...Ch. 5 - Which of the following identifier forms is most...Ch. 5 - Prob. 2PECh. 5 - Write a simple assignment statement with one...
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