View Compilation Error

247106_0_23041.cpp: In function `int main()':
247106_0_23041.cpp:6: error: `cin' undeclared (first use this function)
247106_0_23041.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
247106_0_23041.cpp:12: error: `cout' undeclared (first use this function)
247106_0_23041.cpp:12: error: `endl' undeclared (first use this function)