cygwin gcc-6.4.0 compiler

Question

I've reinstalled my windows today because of some bug's.I then installed cygwin and gcc compiler, but when I try to compile some file with -std=c++14 tag it gives me errors. When I replace #include<bits/stdc++.h>with #include<iostream> it will process the compiling as well, but I want to use the bits/stdc++.h lib. Can anyone help me fix this?

Answer 1

"I want to use the bits/stdc++.h lib" - it's not a library, and you definitely don't want to use it. It's an implementation detail of some compilers, and nothing that should be included in your code. If you are being taught to use it, learn C++ from some other source.