/in/foo.cc: In function 'void read(int&)':
/in/foo.cc:20:2: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
  while((ch=getchar())<'0'||ch>'9');res=ch-48;
  ^~~~~
/in/foo.cc:20:36: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
  while((ch=getchar())<'0'||ch>'9');res=ch-48;
                                    ^~~