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Block Scope and Dynamic Scope in C Programming

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Block Scope and Dynamic Scope in C Programming

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Questions and Answers

What is a disadvantage of explicit heap-dynamic variables?

Inefficient, unreliable, and costly heap management (correct)
History-sensitive allocation and deallocation
Efficient references with direct addressing
Static type binding with explicit deallocation

Which language utilizes implicit heap-dynamic variables for all variables?

Java
APL (correct)
C++
Perl

How are explicit heap-dynamic variables deallocated in Java?

Using implicit garbage collection (correct)
Through explicit directives specified by the programmer
Automatically by the compiler
Manually with 'free' keyword

What type of binding occurs in explicit heap-dynamic variables?

Static type & dynamic storage (A) Signup and view all the answers

Which programming languages use implicit heap-dynamic variables for all strings and arrays?

Perl and Java (D) Signup and view all the answers

What is a characteristic of implicit heap-dynamic variables?

Runtime overhead for dynamic attributes (B) Signup and view all the answers

In what way is referencing done in explicit heap-dynamic variables?

Through indirect addressing (C) Signup and view all the answers

What is a drawback of implicit heap-dynamic variables in programming?

Loss of error detection by the compiler (B) Signup and view all the answers

How are Java objects different from explicit heap-dynamic variables?

They use garbage collection instead of manual deallocation (D) Signup and view all the answers

What issue is typical of explicit heap-dynamic variables compared to implicit heap-dynamic variables?

Inefficient references with indirect addressing (D) Signup and view all the answers