View Compilation Error

187674_0_24570.cpp: In function `int main()':
187674_0_24570.cpp:5: error: `cin' undeclared (first use this function)
187674_0_24570.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
187674_0_24570.cpp:13: error: `cout' undeclared (first use this function)
187674_0_24570.cpp:13: error: `endl' undeclared (first use this function)