In file included from yo.cpp:3:
ok.ui:1: error: expected unqualified-id before '<' token
ok.ui:1: error: expected `,' or `;' before '<' token
ok.ui:54: error: expected constructor, destructor, or type conversion before '<'
 token
ok.ui:54: error: expected `,' or `;' before '<' token
yo.cpp:10:3: warning: no newline at end of file