String header file and gcc

Question

Hello every one I use code blocks with gcc mingw 8 the problem is all the declaration in the string header file not in std namespace but in __cxx11 namespace Why?

Answer 1

https://code.sololearn.com/cd76zOsoETtK/?ref=app

Answer 2

Likely because you haven't set the compiler settings to support the C++ 2011 standard. By default, code blocks uses pre-2011 language.

Answer 3

I will try it,
Note: I set it up with c++17
I don't use the default compiler

Answer 4

Not solved

Answer 5

Here is how to update:
http://www.cplusplus.com/doc/tutorial/introduction/codeblocks/

Answer 6

Sorry! I can try it on my laptop either tonight or tomorrow night, if you give me SoloLearn links to the code.