Why doesn't randomize() and random() work on Visual Studio?

Question

C++ / C#

I am learning C++. On the book I saw these functions I wanted to test on Visual Studio 2013 but display an error
error C3861: 'random': identifier not found .
That being said, rand() works just fine.

Answer 1

There are no randomize() and random() functions in C++. Most likely, the book uses the Borland compiler, which is outdated in the last millennium, likes to use Pascal's libraries and APIs, and does not follow the standard.
There is also the random() function in the POSIX standard, which is used mainly on Unix-like systems.