What easy zlib tutorials are there?

Well there are many zlib articles , tips and tutorials. Some of them are

1) Bobobobo's Blog

Website: http://bobobobo.wordpress.com/2008/02/23/how-to-use-zlib/

This article basically tells you how to use zlib, and there is a snippet of code that will get you going. This project shows you how to use zlib. Its a console project, because there's no need to create a window to demonstrate use of zlib.

2) zlib: Add Industrial Strength Compression to Your C/C++ Apps

Website: https://www.codeguru.com/cplusplus/zlib-add-industrial-strength-compression-to-your-c-c-apps/

For simplicity's sake, this tutorial covers only the basic C-style interface. All the concepts inherent there will be relevant to most other bindings. Since its in C language, it will be most beneficial to your requirements.

Last, you can use this too available in zlib ... Zlib contains them. Have a look in the manual under "Utility Functions".

ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen,
                                   const Bytef *source, uLong sourceLen));

See http://zlib.net/zlib_how.html