View Compilation Error

651755_0_0_16390.cpp: In function `int main()':
651755_0_0_16390.cpp:2: error: `cin' undeclared (first use this function)
651755_0_0_16390.cpp:2: error: (Each undeclared identifier is reported only once for each function it appears in.)
651755_0_0_16390.cpp:2: error: `cout' undeclared (first use this function)
651755_0_0_16390.cpp:2: error: `endl' undeclared (first use this function)