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std::type_info::name

From cppreference.com
< cpp‎ | types‎ | type info
 
 
 
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const char* name() const;

Returns an implementation defined null-terminated character string containing the name of the type. No guarantees are given, in particular, the returned string can be identical for several types and change between invocations of the same program.

Contents

[edit] Parameters

(none)

[edit] Return value

null-terminated character string containing the name of the type.

[edit] Notes

Some implementations (such as MSVC, IBM, Oracle) produce a human-readable type name. Others, most notably gcc and clang, return the mangled name. The mangled name can be converted to human-readable form using implementation-specific API such as abi::__cxa_demangle directly or through boost::core::demangle. Then can also be piped through the commandline utility c++filt -t.

[edit] Example

#include <iostream>
#include <typeinfo>
 
struct Base { virtual ~Base() = default; };
struct Derived : Base {};
 
int main() {
	Base b1;
	Derived d1;
 
	const Base *pb = &b1;
	std::cout << typeid(*pb).name() << '\n';
	pb = &d1;
	std::cout << typeid(*pb).name() << '\n';
}

Possible output:

4Base
7Derived

[edit] See also

(C++11)
returns a value which is identical for the same types
(public member function) [edit]