what is the difference between C & C++ and which one is more powerful and fast.

Answer 1

C ++ is more powerful because it supports every command from C and have extra things. If you only use C commands, both have the same speed. If you use C++ commands, then C++ is barelly slower due to overhead in fuctions. You would probably never notice any difference in speed.

Answer 2

You can think of C++ as the upgraded version of C. C++ was the improved version of C. While also C++ continues to grow so you may come across different versions of C++ that have new features. Typically newer versions of C++ display numbers at the end such as C++89 or something.

Answer 3

c is not object oriented and you cant define classes in it
c++ considered a high performance language
so about that i vote for c++ but c has some usage for some issues