Why do we use nullptr in C++?

The nullptr keyword represents a null pointer value. Use a null pointer value to indicate that an object handle, interior pointer, or native pointer type does not point to an object.

Why do we need nullptr?

C++11 introduces nullptr , it is known as the Null pointer constant and It improves type safety and resolves ambiguous situations unlike the existing implementation dependent null pointer constant NULL .

When was nullptr introduced?

C++11
nullptr is a new keyword introduced in C++11. nullptr is meant as a replacement to NULL . nullptr provides a typesafe pointer value representing an empty (null) pointer.

Where is nullptr defined in C++?

Although you can use the keyword nullptr without including any headers, if your code uses the type std::nullptr_t , then you must define it by including the header . The nullptr keyword is also defined in C++/CLI for managed code applications and is not interchangeable with the ISO Standard C++ keyword.

Is nullptr == null C++?

Nullptr vs NULL NULL is 0 (zero) i.e. integer constant zero with C-style typecast to void* , while nullptr is prvalue of type nullptr_t , which is an integer literal that evaluates to zero. For those of you who believe that NULL is the same i.e. (void*)0 in C and C++.

How do you define a nullptr in C++?

The nullptr keyword specifies a null pointer constant of type std::nullptr_t , which is convertible to any raw pointer type. Although you can use the keyword nullptr without including any headers, if your code uses the type std::nullptr_t , then you must define it by including the header .

What does nullptr equal?

How is nullptr defined in C++?

The nullptr keyword specifies a null pointer constant of type std::nullptr_t , which is convertible to any raw pointer type. The nullptr keyword is also defined in C++/CLI for managed code applications and is not interchangeable with the ISO Standard C++ keyword.

What is the type of nullptr literals in C++?

std::nullptr_t is the type of the null pointer literal, nullptr. It is a distinct type that is not itself a pointer type or a pointer to member type. Its values are null pointer constants (see NULL), and may be implicitly converted to any pointer and pointer to member type.