Which C++ standard is the default when compiling with g++?

Question

I have a piece of code that looks like the following. Let\'s say it\'s in a file named example.cpp

#include 
#include 

        

Answer 1

The default language standards for both C and C++ are specified in the GCC Manuals. You can find these as follows:

Browse to https://gcc.gnu.org/onlinedocs/

Select the GCC #.## Manual link for the version of GCC you are interested in, e.g. for GCC 7.5.0:

https://gcc.gnu.org/onlinedocs/gcc-7.5.0/gcc/

Click the topic link Language Standards Supported by GCC, followed by the topic C++ Language (or C language). Either of these topics will have a sentence such as:

The default, if no C++ language dialect options are given, is -std=gnu++14.

The default, if no C language dialect options are given, is -std=gnu11.

The above two examples are for GCC 7.5.0.