Dictionaries for programming language functions, data types, etc.?

A fair amount of tutorials go through at a modest pace, introducing one or a few functions or data types at a time. These and those who don’t alike don’t go very far.

I’d like to know if there’s a dedicated “dictionary”, if you will, for functions and data types in C? In fact just in case I have no choice but to look past C for my purposes, I’ll be greedy and ask if there are any dictionaries for other languages? Particularly ones that come with OOP support by default.

Bonus points if an example or two is included per command to show how it works.

In addition to the internet I’m also open to old-fashioned books, if any exist and they’re thorough.

https://www.cplusplus.com/reference/

Many languages have references. MDN for Javascript. Official documentation for Python. Etc

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