View Compilation Error

0_0_1960668_31676.cpp: In function `int main()':
0_0_1960668_31676.cpp:6: error: `cin' undeclared (first use this function)
0_0_1960668_31676.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1960668_31676.cpp:8: error: `cout' undeclared (first use this function)
0_0_1960668_31676.cpp:8: error: `setprecision' undeclared (first use this function)
0_0_1960668_31676.cpp:8: error: `fixed' undeclared (first use this function)
0_0_1960668_31676.cpp:8: error: `endl' undeclared (first use this function)