PCF is a programming language created by Microsoft that is designed to be simple and easy to use. It is based on the Pascal programming language and is intended for use in creating Windows applications. PCF is an interpreted language, meaning that programs written in PCF are not compiled into machine code, but are instead interpreted by a PCF interpreter. This makes PCF programs much easier to write and debug than programs written in other languages, such as C++.
PCF was created in the early 1990s and was first used to create the Microsoft Office Assistant, Clippy. Clippy was a controversial feature of Microsoft Office that was eventually discontinued. Despite this, PCF remains a popular language for creating Windows applications.
PCF is a relatively easy language to learn. It is syntax is based on Pascal, so if you are familiar with that language, you should have no trouble learning PCF. There are many resources available online to help you get started, including Microsoft's own PCF Developer Center.
If you are looking for a language to create Windows applications that is easy to use and easy to learn, then PCF is a great choice.