Any ready functions to use in c++ ?

Question

I mean like in pascal their is some functions ready to use included in the "wincrt" ... like ord(x) , succ(x) , length(x) ...
I'm not asking to give me codes to copy and past I already created my own functions that does the same as those .. but is their any functions I may gonna need to know working on advanced codes ?
thanks in advance .
and btw this application changed my life !
big thanks for it's creators <3

Answer 1

There are tons of libraries in C++ with predefined functions. For example most people use the Standard namespace (using namespace std;)
This gives you access to function such as console output -- cout << "Hello World";
You can also import other libraries to suit your needs and use their functions

Answer 2

I made a research in Google and I found a lot of functions and librarys , thanks anyway ...