View Compilation Error

91683_0_18035.cpp
91683_0_18035.cpp(1) : error C2871: 'std' : does not exist or is not a namespace
91683_0_18035.cpp(5) : error C2065: 'cin' : undeclared identifier
91683_0_18035.cpp(5) : warning C4552: '>>' : operator has no effect; expected operator with side-effect
91683_0_18035.cpp(8) : error C2065: 'cout' : undeclared identifier
91683_0_18035.cpp(8) : warning C4552: '<<' : operator has no effect; expected operator with side-effect
91683_0_18035.cpp(9) : warning C4508: 'main' : function should return a value; 'void' return type assumed