View Compilation Error

29708_0_13356.cpp
29708_0_13356.cpp(6) : error C2065: 'cin' : undeclared identifier
29708_0_13356.cpp(6) : error C2296: '>>' : illegal, left operand has type 'double'
29708_0_13356.cpp(6) : error C2297: '>>' : illegal, right operand has type 'double'
29708_0_13356.cpp(6) : fatal error C1903: unable to recover from previous error(s); stopping compilation