g++编译报错，如何解决

Question

~ mvim test.cpp
~ g++ test.cpp -o test
In file included from test.cpp:1:
In file included from /Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/iostream:38:
In file included from /Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/ios:215:
/Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/iosfwd:90:10: fatal error: 'wchar.h' file not found
#include // for mbstate_t
^
1 error generated.

Answer 1

查看环境变量

env

env也可以用来设置环境变量的值，具体看env --help

set 也可是设置环境变量

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