View Compilation Error

0_0_2821773_14161.cpp: In function `int main()':
0_0_2821773_14161.cpp:7: error: `cin' undeclared (first use this function)
0_0_2821773_14161.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2821773_14161.cpp:11: error: `log10' undeclared (first use this function)
0_0_2821773_14161.cpp:14: error: `pow' undeclared (first use this function)
0_0_2821773_14161.cpp:15: error: `cout' undeclared (first use this function)
0_0_2821773_14161.cpp:15: error: `endl' undeclared (first use this function)