View Compilation Error

128944_0_21015.cpp
128944_0_21015.cpp(1) : error C2871: 'std' : does not exist or is not a namespace
128944_0_21015.cpp(4) : error C2065: 'cin' : undeclared identifier
128944_0_21015.cpp(32) : error C2065: 'cout' : undeclared identifier
128944_0_21015.cpp(32) : error C2065: 'endl' : undeclared identifier
128944_0_21015.cpp(32) : warning C4552: '<<' : operator has no effect; expected operator with side-effect