Why in pc in c++ i have to write #include<iostream.h> while when we write #include<iostream> it shows error

Answer 1

Actually, it used before 2002. But after 2002 c++ community and bell lab change it and remove .h from header file. From there this is the standard of c++. When you write iostream it simply means you are calling a header file. Now all compiler shows this as a standard of c++. If you get a compiler which is before 2002, and not been updated since than. You can use it. But Why you want that, bell lab done this for user benifit. You can use turbo c++ but why

Answer 2

This is due to different complier versions. For example, if you update a .API package that resolves bug problem as well as giving new features, of course the package will not do 100% the same thing as before right?

Answer 3

it is becuase the compiler is perhaps new when it automatically adds .h in header files