/in/foo.cc: In function 'void Read(int&)':
/in/foo.cc:20:5: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
     while(ch>='0'&&ch<='9') x=x*10+ch-48,ch=getchar(); return;
     ^~~~~
/in/foo.cc:20:56: 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-48,ch=getchar(); return;
                                                        ^~~~~~