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A language L   allows declaration of arrays whose sizes are not known during compilation. It is required to make efficient use of memory. Which one of the following is true?
  • a)
     A compiler using static memory allocation can be written for L
  • b)
    A compiler cannot be written for ; an interpreter must be used
  • c)
    A compiler using dynamic memory allocation can be written for L
  • d)
    None of the above
Correct answer is option 'D'. Can you explain this answer?
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A language L allows declaration of arrays whose sizes are not known du...
 If a language L allows declaration of arrays whose sizes are not known during compilation time. It is required to use efficient use of memory.
So a compiler using dynamic memory allocation can be written for L.
An array is a collection of data items, all of the same type, accessed using a common name.
C dynamic memory allocation refers to performing manual memory management for dynamic memory allocation in the C programming language via a group of functions in the C standard library, namely malloc, realloc, calloc and free.
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A language L allows declaration of arrays whose sizes are not known du...
For creation of such language L that allows dynamic memory allocation ,such code wouldn't not be determined during compile time as it is resolved during run time ,therefore no compiler can be constructed
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A language L allows declaration of arrays whose sizes are not known du...
Explanation:

Static memory allocation and dynamic memory allocation are two different techniques used by compilers to manage memory in a programming language.

Static memory allocation refers to allocating memory for variables and data structures at compile time. This means that the size of the memory required for arrays is known during compilation. In languages that allow declaration of arrays whose sizes are not known during compilation, static memory allocation alone cannot be used. Therefore, option A is incorrect.

Dynamic memory allocation, on the other hand, allows memory to be allocated and deallocated during program execution. This allows arrays to be created with sizes that are determined at runtime. However, dynamic memory allocation typically requires the use of a runtime environment or a memory management system that keeps track of allocated memory and deallocates it when it is no longer needed.

Since the language L allows arrays with unknown sizes during compilation, it is possible to write a compiler that uses dynamic memory allocation to manage memory for these arrays. Therefore, option C is correct.

An interpreter is not necessary for a language that allows dynamic memory allocation. An interpreter is a program that executes code directly, without the need for compilation. While an interpreter could be used to execute code in a language that allows dynamic memory allocation, it is not a requirement. Therefore, option B is incorrect.

In conclusion, the correct answer is option D: None of the above. A compiler using dynamic memory allocation can be written for a language that allows declaration of arrays whose sizes are not known during compilation.
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Which of the following statement is true for Power-of-2 allocators? Buddy System splits and recombines memory blocks in a predetermined manner during allocation and deallocation. No splitting of blocks takes place, also no effort is made to coalesce adjoining blocks to form larger blocks; when released, a block is simply returned to its free list. When a request is made for m bytes, the allocator first check the free list containing blocks whose size is 2i for the smallest value of i such that 2i ≥ m.if the free list is empty ,it checks the list containing blocks that are higher the next higher power of 2 in size on so on. an entire block is allocated to a request. When a request is made for m bytes. the system finds the smallest power of 2 that is ≥ m. Let this be 2i.if the list is empty, it checks the lists for block of size 2i+1.it takes one block off this list and splits it into two halves of size 2i.it put one of these blocks into the free list of size 2i,and uses the other block to satisfy the request.

Which of the following statement is true for buddy system allocators? Buddy System splits and recombines memory blocks in a predetermined manner during allocation and deallocation. No splitting of blocks takes place, also no effort is made to coalesce adjoining blocks to form larger blocks; when released, a block is simply returned to its free list. When a request is made for m bytes, the allocator first check the free list containing blocks whose size is 2i for the smallest value of i such that 2i ≥ m.if the free list is empty ,it checks the list containing blocks that are higher the next higher power of 2 in size on so on. an entire block is allocated to a request. When a request is made for m bytes. the system finds the smallest power of 2 that is ≥ m. Let this be 2i.if the list is empty, it checks the lists for block of size 2i+1.it takes one block off this list and splits it into two halves of size 2i.it put one of these blocks into the free list of size 2i,and uses the other block to satisfy the request.

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A language L allows declaration of arrays whose sizes are not known during compilation. It is required to make efficient use of memory. Which one of the following is true?a)A compiler using static memory allocation can be written for Lb)A compiler cannot be written for ; an interpreter must be usedc)A compiler using dynamic memory allocation can be written for Ld)None of the aboveCorrect answer is option 'D'. Can you explain this answer?
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A language L allows declaration of arrays whose sizes are not known during compilation. It is required to make efficient use of memory. Which one of the following is true?a)A compiler using static memory allocation can be written for Lb)A compiler cannot be written for ; an interpreter must be usedc)A compiler using dynamic memory allocation can be written for Ld)None of the aboveCorrect answer is option 'D'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about A language L allows declaration of arrays whose sizes are not known during compilation. It is required to make efficient use of memory. Which one of the following is true?a)A compiler using static memory allocation can be written for Lb)A compiler cannot be written for ; an interpreter must be usedc)A compiler using dynamic memory allocation can be written for Ld)None of the aboveCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A language L allows declaration of arrays whose sizes are not known during compilation. It is required to make efficient use of memory. Which one of the following is true?a)A compiler using static memory allocation can be written for Lb)A compiler cannot be written for ; an interpreter must be usedc)A compiler using dynamic memory allocation can be written for Ld)None of the aboveCorrect answer is option 'D'. Can you explain this answer?.
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