View Compilation Error

160589_0_6856.cpp
160589_0_6856.cpp(6) : error C2676: binary '<<' : 'class istream_withassign' does not define this operator or a conversion to a type acceptable to the predefined operator
160589_0_6856.cpp(6) : error C2065: 'b' : undeclared identifier
160589_0_6856.cpp(6) : fatal error C1903: unable to recover from previous error(s); stopping compilation