On the method of outputting the complete name of typeID from GCC

This is my previous article ：
https://www.cnblogs.com/jisuanjizhishizatan/p/16149500.html

about typeid, You can use the following method to output its name , Essentially name() Method returns a string String of type .

cout<<typeid( Variable name ).name<<endl;

In different environments , Different results are output . about VC Compilers like that , The output is the full name . In some compilers , The output is only a single letter .

Such as , Only output i.

For the method of how to output the full name , I also did a simple search on the Internet , Finally found cxxabi.h A function of ：

cout<<abi::__cxa_demangle(typeid( Variable name ).name(),0,0,0)<<endl;

This is the test code , For the output of the function pointer ：