When memory allocated with the C malloc function is no longer needed, that memory should be returned to the system immediately by calling the C __________ function.

Question

BlackTom AI · Accepted Answer

The question asks which C function should be used to release memory previously allocated with malloc. Understanding the lifecycle of dynamic memory in C helps evaluate the options.
Option 1: delete. This is incorrect for C; delete is a keyword/operator used in C++ to deallocate memory allocated with new. It has no meaning in standard C, so it cannot be used with malloc’d memory in C programs.
Option 2: dealloc. This name resembles memory management terminology, but there is no standard C function called dealloc. Using such a function would be undefined unless a specific library provided it, which is not part of the C standard library.
Option 3: free. This is the correct choice. malloc allocates a block of memory, and free releases that exact block back to the system so it can be reused. It is the standard function for deallocating memory allocated by malloc, calloc, or realloc.
Option 4: return. In C, return is a control-flow statement used to exit a function and optionally provide a value. It is not related to memory deallocation and will not release heap memory allocated by malloc.
In summary, only free matches the standard approach to releasing memory obtained via malloc in C, while the other options refer to non-C syntax, non-standard functions, or control flow rather than deallocation.

When memory allocated with the C malloc function is no longer needed, that memory should be returned to the system immediately by calling the C __________ function.

查看解析

登录即可查看完整答案

类似问题

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

Under the assumptions used in cost-volume-profit analysis, as the activity increases:

The CVP and break-even analysis are supported by a range of important assumptions. Which of the following is not an assumption of the CVP:

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单