Difference of standards & Which one to use it?

[Francis Lalhmuakliana]

Q1. What's the differences between:

#include <iostream> & #include <iostream.h>

I'm confused! My textbook uses the latter standards...

Q2. Is it anomalous to use the latter standards? Even my Compiler (Code::Blocks) can't run it.

[SECMoG1T]

I suggest you stick to standards only, .h are depreciated in c++ except for user defined headers , if you use them your program becomes less portable and error prone, if your book uses most of these depreciated stuff consider buying a different book .