Is nullptr same as null?

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++.

Should I use null or nullptr?

As I mentioned above, the general rule of thumb that I recommend is that you should start using nullptr whenever you would have used NULL in the past. As a reminder, since C++11, NULL can be either an integer literal with value zero, or a prvalue of type std::nullptr_t .

What is nullptr equal to?

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. Use nullptr with either managed or native code. The nullptr keyword is equivalent to Nothing in Visual Basic and null in C#.

Is nullptr false?

A zero value, null pointer value, or null member pointer value is converted to false; any other value is converted to true. For direct-initialization (11.6), a prvalue of type std::nullptr_t can be converted to a prvalue of type bool; the resulting value is false.

Is there a way to use nullptr in C?

Uses of NULL other than comparing with a pointer (like using it to represent the nul byte at the end of a string) won’t work with nullptr. In some cases, NULL is #define NULL 0, as the integer constant 0 is special-cased in C and C++ when you compare it with pointers.

What’s the difference between null and null in PHP?

The difference would be significant if you had a small loop going through the same code thousands of times in the one Web page request. == doesn’t check the type, so somehow, somewhere, something like the string ” or the string ‘null’ may come up as equal to null.

Is the nullptr pointer always a pointer type?

nullptr is always a pointer type. 0 (aka. C’s NULL bridged over into C++) could cause ambiguity in overloaded function resolution, among other things: @Cheersandhth.-Alf I have no idea how to respond to this other than the fact that I knew what I was asking and this was the easiest to understand explanation. – Riptyde4 Dec 11 ’13 at 3:17

Is the null constant a pointer or a null constant?

The NULL constant gets promoted to a pointer type, and as a pointer it is a null pointer, which then compares equal to nullptr. do the same thing.