C++ doesn't have: * PROC – first class nested functions (emulation due to local definitions of class-types, which then could be functors, also new C++11 has lambda functions), * OP and PRIO – definable operator symbols and priorities, * garbage collection (could be emulated with help of smart pointers), * use before define, * formatted transput using complex formatting declarations, * := – assignment operation symbol (to avoid confusion with equal sign), * array (and slice operations on them, but in layered libraries), * automatic UNIONs, * CASE expressions, * nonlocal GOTO * intuitive declaration syntax due to its origin from C.