What is the difference between the librarys like <cstdlib> or <ctime> and the librarys of C <stdlib.h> or <time.h> in Cpp????

Question

I saw this function <cstdlib> and <ctime> in a program that create a random numbers but, what is de difference if i write the same program but i include de Library Stdlib or Time common????
thanks

Answer 1

Mostly they are very similar. The main difference is that xxxx.h is a C header while cxxxx is a C++ header. The C versions are provided for compatibility with C. Being C++ headers, the Cxxx libraries are embedded into a namespace (std) while xxxx.h headers make their definitions in the global namespace.

If you are coding C++ I would suggest using the cxxxx libraries and make use of namespaces for clarity in your code.

There are a few other specific differences, but instead of describing them, I will point you to: http://www.cplusplus.com/reference/clibrary/