View Compilation Error

652349_0_0_20334.cpp: In function `int main(int, char**)':
652349_0_0_20334.cpp:30: error: `cin' undeclared (first use this function)
652349_0_0_20334.cpp:30: error: (Each undeclared identifier is reported only once for each function it appears in.)
652349_0_0_20334.cpp:47: error: `cout' undeclared (first use this function)
652349_0_0_20334.cpp:47: error: `endl' undeclared (first use this function)