What is mean of using nemespace std;

Question

plz told what does it mean

Answer 1

It means that we use std namespace.
Std namespace contains some objects and variables such as cin, cout, endl... etc.

Answer 2

in C++11 we cannot simply use cout or cin they have to be used as std::cout and std::cin respectively so we use namespace std to shorten the job for us !!!

namespace std also does some other works of shortening the repetitive operators !!!

#SiD

Answer 3

thank you siddharth