What is necessary to include?

[bld]

I want to make simple programs with C++ (mainly input/output based programs) what do I need to include? Is iostream enough, or do I have to include something else?

[Thomas1965]

It depends what you want to do. You probably need strings, maybe some output formatting (iomanip) . If you want to store your input somewhere you might need vector as well.
If you want to store your output in a file then you need fstreams.

[bld]

Is there anything you would recommend for a beginner program?

[jonnin]

a typical first program or so just has <iostream> and <string>.
after a short while you will realize which ones you need for what things or at least where to look online if you need something and forgot what header it was in.

[deleted account xyzzy]

For a truly basic beginner's program, the famous "Hello World" example, the only header needed is <iostream>.

What you need to include depends on what features of the C++ Library you use. As someone learns more C++ features more headers will be required.

A list of C++ Standard Library headers:
https://en.cppreference.com/w/cpp/header

Some header files include other header files. What is also-included can vary from implementation to implementation. MSVC vs. GCC, for example.

[Thomas1965]

Here are lists of exercises:
* https://edabit.com/challenges/cpp
* https://www.cplusplus.com/forum/articles/12974/

[bld]

Thanks a lot for the help!