View Compilation Error

187840_0_17036.cpp: In function `int main()':
187840_0_17036.cpp:7: error: `cin' undeclared (first use this function)
187840_0_17036.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
187840_0_17036.cpp:11: error: `cout' undeclared (first use this function)
187840_0_17036.cpp:11: error: `endl' undeclared (first use this function)