Type specifiers

Type specifiers indicate the type of the object being declared. See the following available kinds of types:

• Fundamental or built-in types:
  • Arithmetic types
    • Integral types
    • Boolean types
    • Floating-point types
    • Fixed-point decimal types
    • Character types
  • The void type
• User-defined types

A type is a literal type if it satisfies one of the following conditions:

• It is a scalar type.
• It is a reference type.
• It is an array of literal type.
• It is a class type with all the following properties:
  • The class has a trivial destructor.
  • Each constructor call and full expression in the initializers for nonstatic data members (if any) is a constant expression.
  • The class is an aggregate type or has at least one constexpr constructor or constructor template that is not a copy or move constructor.
  • All nonstatic data members and base classes of the class are of literal types.

In the C++11 standard, the following type specifiers are introduced:

• The auto type specifier
• The decltype(expression) type specifier