How to fix error: unknown type name ‘namespace’

Question

#ifndef UNO_ACTION_ 
#define UNO_ACTION_
namespace Uno
{
namespace Game
{
    class Game;
}
} // namespace

namespace Uno
{
namespace Action
{
using ::Uno::Game::Gam         


        

Answer 1

I had a similar issue and found this question but the solutions don't match mine completely, so I'm adding mine here.

In my case, I was including a header file in .cpp files and .c files. The solution was to split off the namespace part of the header since that was obviously only needed in the .cpp files.