* Proposing use of C++ header files and functions 

Proposing use of C++ header files and functions instead of C header file and functions. 
Here are few examples for comparison : 

C                            C++
<cstdio>                <iostream> & <fstream>
printf()                     cout 
fopen()                    ifstream
etc ...

Please let me know if there are any comments.

* Updated diff based on review comments