Types
void
The (nonexistent) value of a void expression (an expression of the with type void) shall not being used in any, and Implicit or explicit conversions (except to void) shall is applied to such an expression. If an expression of any other type is evaluated as a void expression, its value or designator is discarded. (A void expression is evaluated for its side effects.)
void;
Nullptr
Both (int*) 0 and nullptr is valid template-arguments for a non-type template-parameter of type "pointer to Int. "
"Null pointer constant"
An integer constant expression with the value 0, or such an expression cast to type void *, is called a null Poin ter constant.66) If A null pointer constant is converted to a pointer type, the resulting pointer, called a null pointer, is guaranteed to compare unequal to a pointer to any object or function
nullptr corresponds to a pointer-type variable, and null corresponds to a pointer-type variable or constant 0
Types *val = nullptr;
Auto
bool
True
Flase
Char
char16_t
char32_t
wchar_t
Int
Float
Double
Unsigned
Signed
Short
Long
Programming languages-c/c++