View Compilation Error

522141_0_0_6823.cpp: In function `int main()':
522141_0_0_6823.cpp:4: error: `cin' undeclared (first use this function)
522141_0_0_6823.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
522141_0_0_6823.cpp:5: error: `cout' undeclared (first use this function)
522141_0_0_6823.cpp:5: error: `endl' undeclared (first use this function)