Note: All the lecture notes (written in English) are freely available at following G-Drive link;
https://drive.google.com/drive/folder...
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Official Production System 5 (OPS-5) was a classical tool used for the development of some the famous and successful Rule Based System (such as XCON) in last century. Doing few examples like calculating area of circle, finding factorial of a number (in next video) in OPS-5 syntax will change the programing taste of the students, different from conventional C++ syntax.