/in/foo.cc: In constructor 'Date::Date()':
/in/foo.cc:63:7: warning: unused variable 'y' [-Wunused-variable]
   int y = 2024;
       ^
/in/foo.cc:64:7: warning: unused variable 'm' [-Wunused-variable]
   int m = 2;
       ^
/in/foo.cc:65:7: warning: unused variable 'd' [-Wunused-variable]
   int d = 3;
       ^