View Compilation Error

809852_0_0_4232.cpp:1:21:  iostream : No such file or directory
809852_0_0_4232.cpp: In function `int main()':
809852_0_0_4232.cpp:6: error: `cin' undeclared (first use this function)
809852_0_0_4232.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
809852_0_0_4232.cpp:9: error: `cout' undeclared (first use this function)
809852_0_0_4232.cpp:9: error: `endl' undeclared (first use this function)