Why std::cout instead of simply cout?

Question

I get these error messages for all cout and endl:

main.cc:17:5: error: ‘cout’ was not declared in this scope
main.cc:17:5: note: sugges         


        

Answer 1

It seems possible your class may have been using pre-standard C++. An easy way to tell, is to look at your old programs and check, do you see:

#include 

or

#include 

The former is pre-standard, and you'll be able to just say cout as opposed to std::cout without anything additional. You can get the same behavior in standard C++ by adding

using std::cout;

or

using namespace std;

Just one idea, anyway.