/in/foo.cc: In function 'int main()':
/in/foo.cc:21:13: error: redeclaration of 'int x'
   21 |         int x;
      |             ^
/in/foo.cc:20:39: note: 'int x' previously declared here
   20 |     int h1,m1,s1,h2,m2,s2,time1,time2,x;
      |                                       ^
/in/foo.cc:27:25: error: '\U0000ff09\U0000ff1b' was not declared in this scope
   27 |         time2=t2.Second(）；
      |                         ^~~~