/in/foo.cc: In function 'int read(int&)':
/in/foo.cc:13:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for (x=0;c<='9'&&c>='0';c=getchar()) x=x*10+(c&15);x*=f;
  ^~~
/in/foo.cc:13:53: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  for (x=0;c<='9'&&c>='0';c=getchar()) x=x*10+(c&15);x*=f;
                                                     ^
/in/foo.cc:14:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^