Clang compiler issues on MacOS

I recently found that my preinstalled Clang compiler on Macbook is very old which supports only C+98 standard. 

So, while running any valid program of C++11, you must ensure that you run with -std=c++11.

Here is a problem which I encountered.

You can either use the below 

clang++ -std=c++11 -stdlib=libc++ main.cpp  -o main

or 

g++ main.cpp -std=c++11 -o main

Note: If you compile as "cc -std=c++17 -o main main.cpp", you will get errors. 

Other errors I got in MacOS are below

Error: non-aggregate type 'vector<int>' cannot be initialized with an initializer list

References:

https://clang.llvm.org/cxx_status.html