/in/foo.cc: In function 'int read()':
/in/foo.cc:18:5: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
     while(ch=getchar(),!isdigit(ch)) if(ch=='-') f=-1;x=(ch^48);
     ^~~~~
/in/foo.cc:18:55: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
     while(ch=getchar(),!isdigit(ch)) if(ch=='-') f=-1;x=(ch^48);
                                                       ^