foo.cc: In function ‘int main()’:
foo.cc:10:14: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
   10 |         else if(a=='P')
      |              ^~
foo.cc:12:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
   12 |                 sum=h*3600+m*60+s;
      |                 ^~~