Memory Allocation - C Programming MCQ Questions and Answers

A. It depends on the system and available memory

B. 2^16 bytes

C. 2^32 bytes

D. 2^64 bytes

A. 'malloc' allocates uninitialized memory, 'calloc' allocates and initializes to zero

B. 'malloc' allocates and initializes to zero, 'calloc' allocates uninitialized memory

C. 'malloc' is used for arrays, 'calloc' is used for single elements

D. 'malloc' allocates memory from the stack, 'calloc' allocates from the heap

A. alloc()

B. stackalloc()

C. malloc()

D. calloc()

A. It leads to undefined behavior

B. The program terminates

C. Memory is released, but the pointer remains valid

D. Memory is leaked

A. Flexibility to allocate memory at runtime

B. Faster execution of programs

C. Smaller memory footprint

D. Elimination of memory leaks

A. malloc()

B. structurealloc()

C. structalloc()

D. calloc()

A. 'free' is used for dynamic memory, 'delete' is used for static memory

B. 'free' is used for dynamic memory, 'delete' is used for freeing memory

C. 'free' is used for C, 'delete' is used for C++

D. 'free' is used for static memory, 'delete' is used for dynamic memory

A. clearall()

B. deallocateall()

C. freeall()

D. clearmemory()

A. To change the size of a previously allocated block of memory

B. To allocate memory for a structure

C. To copy memory

D. To check for memory leaks

A. Unused memory between allocated blocks

B. A type of data structure

C. A reserved portion of memory

D. A function to allocate memory