What does it mean by name std

Question

name std

Answer 1

std stands for standard

Answer 2

The built in C++ library routines are kept in the standard namespace. That includes stuff like cout, cin, string, vector, map, etc. Because these tools are used so commonly, it's popular to add "using namespace std" at the top of your source code so that you won't have to type the std:: prefix constantly.

Answer 3

Sexually transmitted disease. Please don't get too intimate with C++. (Sarcasm)