i have never used the line "using namespace std" (and using other things) although i see it almost everywhere. i have no idea what any of this means. i asked some pretty knowledgable people why they used it and they said because they were taught to, dont know why, and they dont know what it does, they just type it out of habit. can anyone explain to me what it does, why its there, and why people use it, if i never have without a problem?
