View Compilation Error

651746_0_0_6034.cpp: In function `int main()':
651746_0_0_6034.cpp:2: error: `cin' undeclared (first use this function)
651746_0_0_6034.cpp:2: error: (Each undeclared identifier is reported only once for each function it appears in.)
651746_0_0_6034.cpp:2: error: `string' undeclared (first use this function)
651746_0_0_6034.cpp:2: error: expected `;' before "s"
651746_0_0_6034.cpp:2: error: `s' undeclared (first use this function)
651746_0_0_6034.cpp:2: error: `cout' undeclared (first use this function)
651746_0_0_6034.cpp:2: error: `endl' undeclared (first use this function)