Memory Allocation Methods Quiz

What is the primary difference between compile-time and run-time memory allocation?

Which of the following is a crucial component of dynamic memory allocation?

Which of the following statements about static memory allocation is true?

What is the role of pointers in dynamic memory allocation?

Which operator is used to dynamically allocate memory in C++?

What is the purpose of memory deallocation in dynamic memory allocation?

What is the primary purpose of dynamic memory allocation?

How does a pointer differ from a regular variable?

What is the purpose of the address-of operator (&) in C++?

Which operator is used to access the value that a pointer is pointing to?

What is the correct syntax for declaring a pointer variable in C++?

Why is dynamic memory allocation preferred over using fixed-size arrays?

Memory Allocation

There are two ways to allocate memory for storing data: compile time allocation (static allocation) and run time allocation (dynamic allocation)
Compile time allocation is done by the compiler, where the exact size and storage must be known at compile time, and the size of arrays must be constant
Run time allocation is done dynamically within the program run, and the exact space or number of items does not have to be known by the compiler in advance

Dynamic Memory Allocation

Dynamic memory allocation allows programmers to allocate storage space while the program is running
It requires two criteria: creating dynamic space in memory and storing its address in a pointer
The free store is an area of memory available in the C++ run-time environment to handle dynamic memory allocation
The new operator is used to allocate memory at run time and returns the address of the space allocated
Memory de-allocation is also a part of dynamic memory allocation, where the programmer must clean up dynamically created space using the delete operator

Pointers and Dynamic Memory Allocation

Arrays are limited in size and cannot be adjusted during the program run
Pointers are used to build dynamic data structures from small pieces, allowing for dynamic growth
A pointer is the address value of a memory location
Pointers can be declared using the syntax: Type * variable-name;
Operations on pointers include:
- The address-of operator (&) to get the memory address of a variable
- The contents of operator (*) to get the variable pointed to by a pointer

Test your knowledge on memory allocation methods which include compile time allocation (static) and run time allocation (dynamic). Learn about how memory is allocated for variables and arrays in programming.