>whats the relationship between vectors in c++ and physics?
None that you need to worry about unless you're simulating a physics vector. A C++ vector is basically the same as an array, except with a pretty interface.
A "collection" of data of the same type. In layman's terms, instead of having ten separate integer variables, I can have a single integer array of size ten. I'm going to take layman's terms to the tenth level and say that a class is a "package" of various types of data and functions to access / manipulate this data.
um but isnt that a string then? also now i understand, like in boolean logic gates where bianary coed is in a single group like on cds the holes are little bits of dada in witch a laser shines on it then reflectes it back to the reciever and u hear the music but each group of data in like circuits is a sequense of a number of on and of inpulses a second ect am i close to what it is?