/in/foo.cc: In function 'int read()':
/in/foo.cc:11:2: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
  while(ch>='0'&&ch<='9')x=x*10+(ch^'0'),ch=getchar();return x*f;
  ^~~~~
/in/foo.cc:11:54: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
  while(ch>='0'&&ch<='9')x=x*10+(ch^'0'),ch=getchar();return x*f;
                                                      ^~~~~~