[josh@localhost complex_number_calculator-master]$ make main
'g++     main.cpp   -o main
main.cpp: In function ‘int main()’:
main.cpp:86:17: error: ‘numeric_limits’ was not declared in this scope
      cin.ignore(numeric_limits<streamsize>::max(), '\n');
                 ^~~~~~~~~~~~~~
main.cpp:86:42: error: expected primary-expression before ‘>’ token
      cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                          ^
main.cpp:86:49: error: no matching function for call to ‘max()’
      cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                                 ^
In file included from /usr/include/c++/6.1.1/bits/char_traits.h:39:0,
                 from /usr/include/c++/6.1.1/ios:40,
                 from /usr/include/c++/6.1.1/ostream:38,
                 from /usr/include/c++/6.1.1/iostream:39,
                 from main.cpp:40:
/usr/include/c++/6.1.1/bits/stl_algobase.h:219:5: note: candidate: template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)
     max(const _Tp& __a, const _Tp& __b)
     ^~~
/usr/include/c++/6.1.1/bits/stl_algobase.h:219:5: note:   template argument deduction/substitution failed:
main.cpp:86:49: note:   candidate expects 2 arguments, 0 provided
      cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                                 ^
In file included from /usr/include/c++/6.1.1/bits/char_traits.h:39:0,
                 from /usr/include/c++/6.1.1/ios:40,
                 from /usr/include/c++/6.1.1/ostream:38,
                 from /usr/include/c++/6.1.1/iostream:39,
                 from main.cpp:40:
/usr/include/c++/6.1.1/bits/stl_algobase.h:265:5: note: candidate: template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)
     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
     ^~~
/usr/include/c++/6.1.1/bits/stl_algobase.h:265:5: note:   template argument deduction/substitution failed:
main.cpp:86:49: note:   candidate expects 3 arguments, 0 provided
      cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                                 ^
main.cpp:95:16: error: ‘numeric_limits’ was not declared in this scope
     cin.ignore(numeric_limits<streamsize>::max(), '\n');
                ^~~~~~~~~~~~~~
main.cpp:95:41: error: expected primary-expression before ‘>’ token
     cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                         ^
main.cpp:95:48: error: no matching function for call to ‘max()’
     cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                                ^
In file included from /usr/include/c++/6.1.1/bits/char_traits.h:39:0,
                 from /usr/include/c++/6.1.1/ios:40,
                 from /usr/include/c++/6.1.1/ostream:38,
                 from /usr/include/c++/6.1.1/iostream:39,
                 from main.cpp:40:
/usr/include/c++/6.1.1/bits/stl_algobase.h:219:5: note: candidate: template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)
     max(const _Tp& __a, const _Tp& __b)
     ^~~
/usr/include/c++/6.1.1/bits/stl_algobase.h:219:5: note:   template argument deduction/substitution failed:
main.cpp:95:48: note:   candidate expects 2 arguments, 0 provided
     cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                                ^
In file included from /usr/include/c++/6.1.1/bits/char_traits.h:39:0,
                 from /usr/include/c++/6.1.1/ios:40,
                 from /usr/include/c++/6.1.1/ostream:38,
                 from /usr/include/c++/6.1.1/iostream:39,
                 from main.cpp:40:
/usr/include/c++/6.1.1/bits/stl_algobase.h:265:5: note: candidate: template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)
     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
     ^~~
/usr/include/c++/6.1.1/bits/stl_algobase.h:265:5: note:   template argument deduction/substitution failed:
main.cpp:95:48: note:   candidate expects 3 arguments, 0 provided
     cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                                ^
main.cpp:122:17: error: ‘numeric_limits’ was not declared in this scope
      cin.ignore(numeric_limits<streamsize>::max(), '\n');
                 ^~~~~~~~~~~~~~
main.cpp:122:42: error: expected primary-expression before ‘>’ token
      cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                          ^
main.cpp:122:49: error: no matching function for call to ‘max()’
      cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                                 ^
In file included from /usr/include/c++/6.1.1/bits/char_traits.h:39:0,
                 from /usr/include/c++/6.1.1/ios:40,
                 from /usr/include/c++/6.1.1/ostream:38,
                 from /usr/include/c++/6.1.1/iostream:39,
                 from main.cpp:40:
/usr/include/c++/6.1.1/bits/stl_algobase.h:219:5: note: candidate: template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)
     max(const _Tp& __a, const _Tp& __b)
     ^~~
/usr/include/c++/6.1.1/bits/stl_algobase.h:219:5: note:   template argument deduction/substitution failed:
main.cpp:122:49: note:   candidate expects 2 arguments, 0 provided
      cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                                 ^
In file included from /usr/include/c++/6.1.1/bits/char_traits.h:39:0,
                 from /usr/include/c++/6.1.1/ios:40,
                 from /usr/include/c++/6.1.1/ostream:38,
                 from /usr/include/c++/6.1.1/iostream:39,
                 from main.cpp:40:
/usr/include/c++/6.1.1/bits/stl_algobase.h:265:5: note: candidate: template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)
     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
     ^~~
/usr/include/c++/6.1.1/bits/stl_algobase.h:265:5: note:   template argument deduction/substitution failed:
main.cpp:122:49: note:   candidate expects 3 arguments, 0 provided
      cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                                 ^
main.cpp:131:16: error: ‘numeric_limits’ was not declared in this scope
     cin.ignore(numeric_limits<streamsize>::max(), '\n');
                ^~~~~~~~~~~~~~
main.cpp:131:41: error: expected primary-expression before ‘>’ token
     cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                         ^
main.cpp:131:48: error: no matching function for call to ‘max()’
     cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                                ^
In file included from /usr/include/c++/6.1.1/bits/char_traits.h:39:0,
                 from /usr/include/c++/6.1.1/ios:40,
                 from /usr/include/c++/6.1.1/ostream:38,
                 from /usr/include/c++/6.1.1/iostream:39,
                 from main.cpp:40:
/usr/include/c++/6.1.1/bits/stl_algobase.h:219:5: note: candidate: template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)
     max(const _Tp& __a, const _Tp& __b)
     ^~~
/usr/include/c++/6.1.1/bits/stl_algobase.h:219:5: note:   template argument deduction/substitution failed:
main.cpp:131:48: note:   candidate expects 2 arguments, 0 provided
     cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                                ^
In file included from /usr/include/c++/6.1.1/bits/char_traits.h:39:0,
                 from /usr/include/c++/6.1.1/ios:40,
                 from /usr/include/c++/6.1.1/ostream:38,
                 from /usr/include/c++/6.1.1/iostream:39,
                 from main.cpp:40:
/usr/include/c++/6.1.1/bits/stl_algobase.h:265:5: note: candidate: template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)
     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
     ^~~
/usr/include/c++/6.1.1/bits/stl_algobase.h:265:5: note:   template argument deduction/substitution failed:
main.cpp:131:48: note:   candidate expects 3 arguments, 0 provided
     cin.ignore(numeric_limits<streamsize>::max(), '\n');
                                                ^
<builtin>: recipe for target 'main' failed
make: *** [main] Error 1