Warning(s):

source_file.cpp:6:52: warning: multi-character character constant [-Wmultichar]
    A(const A bitand) { std::cout<<"A(const A &)"<<'/n'; }
                                                   ^
source_file.cpp:7:38: warning: multi-character character constant [-Wmultichar]
    A(A and) { std::cout<<"A(A &&)"<<'/n'; }
                                     ^
source_file.cpp:8:36: warning: multi-character character constant [-Wmultichar]
    compl A() { std::cout<<"~A()"<<'/n'; }
                                   ^
source_file.cpp:9:87: warning: multi-character character constant [-Wmultichar]
    A bitand operator=(const A bitand) bitand { std::cout<<"A& operator=(const A &)"<<'/n'; }
                                                                                      ^
source_file.cpp:9:93: warning: control reaches end of non-void function [-Wreturn-type]
    A bitand operator=(const A bitand) bitand { std::cout<<"A& operator=(const A &)"<<'/n'; }
                                                                                            ^
5 warnings generated.