5 Questions
Which C standard library functions are used for dynamic memory allocation?
malloc, realloc, calloc, aligned_alloc
In which situations using new/delete is not applicable for dynamic memory allocation?
Garbage collection code or performance-sensitive code
What is the recommended alternative to new/delete in C++ for situations where they are not applicable?
Malloc and placement new
Where are static-duration variables allocated?
In main memory, along with the executable code of the program
What type of variables are allocated on the stack and come and go as functions are called and return?
Automatic-duration variables
Study Notes
Dynamic Memory Allocation
- The C standard library functions used for dynamic memory allocation are
malloc,calloc,realloc, andfree.
Limitations of new/delete
-
newanddeleteare not applicable in situations where the exact size of the memory to be allocated is not known until runtime. - They are also not applicable in C programming.
Alternative to new/delete
- The recommended alternative to
newanddeletein C++ for situations where they are not applicable is to usemalloc,calloc,realloc, andfreefrom the C standard library.
Memory Allocation
- Static-duration variables are allocated in the data segment of the program's memory.
- Automatic variables are allocated on the stack and come and go as functions are called and return.
Test your knowledge of manual memory management for dynamic memory allocation in C, including functions like malloc, realloc, calloc, aligned_alloc, and free. Explore scenarios where new/delete may not be applicable in C++.
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