C++ Developer - Dynamic Memory - Part 1

This video tutorial covers the concept of dynamic memory in C++, explaining how memory is allocated at runtime using pointers. It introduces the 'new' and 'delete' operators for managing memory on the heap, and discusses the importance of setting pointers to null to prevent memory leaks and dangling pointers. The tutorial includes a practical coding example and a challenge to dynamically allocate a boolean variable, demonstrating the use of the Bool Alpha format flag for output. The session concludes with a preview of using dynamic memory for arrays and custom classes.

Why is dynamic memory allocation necessary in some situations?

• To allocate memory at compile time

• To handle unknown memory requirements at runtime

• To improve code readability

• To avoid using pointers

What is the purpose of the 'new' operator in C?

• To allocate memory dynamically

• To delete memory

• To declare variables

• To perform arithmetic operations

In the provided code example, what value is assigned to 'myIntPointer'?

• Undefined

• 0

• 123

• NULL

Why is it important to use the 'delete' operator?

• To allocate memory

• To initialize variables

• To prevent memory leaks

• To perform arithmetic operations

What does setting a pointer to 'null' help prevent?

• Memory allocation

• Memory leaks

• Dangling pointers

• Stack overflow

What is a memory leak?

• Memory that is used for arithmetic operations

• Memory that is allocated but not accessible

• Memory that is returned to the stack

• Memory that is automatically managed

What is a dangling pointer?

• A pointer that is automatically managed

• A pointer that is used for arithmetic operations

• A pointer that has been deleted but still holds an address

• A pointer that points to a valid memory address

What is the purpose of the 'Bool Alpha' format flag?

• To print integers as booleans

• To print booleans as true or false

• To print booleans as 0 or 1

• To print strings as booleans

In the boolean pointer challenge, what value is assigned to 'myBoolPointer'?

• True

• False

• 1

• 0

What should you do after deleting a pointer?

• Set it to null pointer

• Use it immediately

• Reallocate memory

• Ignore it