The book said two “Create a new Command Line Tool project named TimeAfterTime. Make its type Foundation” The type “Foundation” did not show uo in my version of Xcode (version 7.2), so I choose “Objective C”. It did have the same “#import <Foundation/Foundation.h>” so I assume it was OK to use “Objective C” as the type.
However, when I insert this line of code: “double seconds = [now timeIntervalSince1970];” I get an error that timeIntervalSince1970 is an undeclared identifier. Has timeIntervalSince1970 been dropped or am I doing something wrong?
Thanks for your help…