typeof operators (since C23)

Determines the type of an object.

Syntax

typeof( type ) (1)
typeof( expression ) (2)
typeof_unqual( type ) (3)
typeof_unqual( expression ) (4)

Explanation

1) produces the type-name with any nested typeof-specifier evaluated
2) yields the type-name representing the type of its operand. No implicit conversions are applied to expression.
3,4) the same as (1) and (2) respectively but remove qualifiers

Notes

typeof and typeof_unqual are collectively called the typeof operators. The typeof operators cannot be applied to bit-field members. If the type of the operand is a variably modified type, the operand is evaluated; otherwise, the operand is not evaluated. The result of the typeof_unqual operator is the non-atomic unqualified type that would result from the typeof operator. The typeof operator preserves all qualifiers.

Example

References

See also

C++ documentation for decltype

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