View Compilation Error

0_0_13918665_3293.cpp: In function 'int main()':
0_0_13918665_3293.cpp:11:5: error: 'cout' was not declared in this scope
     cout<<"n e\n";
     ^
0_0_13918665_3293.cpp:12:28: error: 'endl' was not declared in this scope
     cout<<"- -----------"<<endl;
                            ^
0_0_13918665_3293.cpp:18:38: error: 'setprecision' was not declared in this scope
         cout<<i<<" "<<setprecision(10)<<e<<endl;
                                      ^