Using arrays or std::vectors in C++, what's the performance gap?

Question

In our C++ course they suggest not to use C++ arrays on new projects anymore. As far as I know Stroustroup himself suggests not to use arrays. But are there significant perf

Answer 1

Go with STL. There's no performance penalty. The algorithms are very efficient and they do a good job of handling the kinds of details that most of us would not think about.