View Compilation Error

0_0_26059246_29150.cpp: In function 'int main()':
0_0_26059246_29150.cpp:15:36: error: 'setprecision' is not a member of 'std'
         std::cout << std::fixed << std::setprecision(0) << std::pow(2, n) << '\n';
                                    ^