/in/foo.cc:37:1: error: '::main' must return 'int'
   37 | void main()
      | ^~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:40:14: error: no matching function for call to 'Time::Time()'
   40 |         Time t1,t2;
      |              ^~
/in/foo.cc:10:9: note: candidate: 'Time::Time(int, int, int)'
   10 |         Time(int xh,int xm,int xs)
      |         ^~~~
/in/foo.cc:10:9: note:   candidate expects 3 arguments, 0 provided
/in/foo.cc:3:7: note: candidate: 'constexpr Time::Time(const Time&)'
    3 | class Time
      |       ^~~~
/in/foo.cc:3:7: note:   candidate expects 1 argument, 0 provided
/in/foo.cc:3:7: note: candidate: 'constexpr Time::Time(Time&&)'
/in/foo.cc:3:7: note:   candidate expects 1 argument, 0 provided
/in/foo.cc:40:17: error: no matching function for call to 'Time::Time()'
   40 |         Time t1,t2;
      |                 ^~
/in/foo.cc:10:9: note: candidate: 'Time::Time(int, int, int)'
   10 |         Time(int xh,int xm,int xs)
      |         ^~~~
/in/foo.cc:10:9: note:   candidate expects 3 arguments, 0 provided
/in/foo.cc:3:7: note: candidate: 'constexpr Time::Time(const Time&)'
    3 | class Time
      |       ^~~~
/in/foo.cc:3:7: note:   candidate expects 1 argument, 0 provided
/in/foo.cc:3:7: note: candidate: 'constexpr Time::Time(Time&&)'
/in/foo.cc:3:7: note:   candidate expects 1 argument, 0 provided
/in/foo.cc:43:14: error: redeclaration of 'Time t1'
   43 |         Time t1(a1,b1,c1);
      |              ^~
/in/foo.cc:40:14: note: 'Time t1' previously declared here
   40 |         Time t1,t2;
      |              ^~
/in/foo.cc:44:14: error: redeclaration of 'Time t2'
   44 |         Time t2(a2,b2,c2);
      |              ^~
/in/foo.cc:40:17: note: 'Time t2' previously declared here
   40 |         Time t1,t2;
      |                 ^~
/in/foo.cc:45:9: error: 'add' was not declared in this scope
   45 |         add(t1,t2);
      |         ^~~