math.cpp: In function 'std::__cxx11::string quest(std::__cxx11::string, std::__cxx11::string)':
math.cpp:10:17: error: invalid conversion from 'std::__cxx11::string (*)(std::__cxx11::string, std::__cxx11::string) {aka std::__cxx11::basic_string<char> (*)(std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>)}' to 'char' [-fpermissive]
   questionadder=quest;
                 ^~~~~
In file included from c:mingwlibgccmingw326.3.0includec++string:52:0,
                 from c:mingwlibgccmingw326.3.0includec++bitslocale_classes.h:40,
                 from c:mingwlibgccmingw326.3.0includec++bitsios_base.h:41,
                 from c:mingwlibgccmingw326.3.0includec++ios:42,
                 from c:mingwlibgccmingw326.3.0includec++ostream:38,
                 from c:mingwlibgccmingw326.3.0includec++iostream:39,
                 from math.cpp:3:
c:mingwlibgccmingw326.3.0includec++bitsbasic_string.h:600:7: note:   initializing argument 1 of 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator=(_CharT) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
       operator=(_CharT __c)
       ^~~~~~~~
math.cpp:11:8: error: could not convert 'quest' from 'std::__cxx11::string(std::__cxx11::string, std::__cxx11::string) {aka std::__cxx11::basic_string<char>(std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>)}' to 'std::__cxx11::string {aka std::__cxx11::basic_string<char>}'
 return quest;
        ^~~~~
math.cpp: In function 'int main()':
math.cpp:18:41: error: too few arguments to function 'std::__cxx11::string quest(std::__cxx11::string, std::__cxx11::string)'
  firstquest=quest("What is 96541-236547");
                                         ^
math.cpp:7:8: note: declared here
 string quest(string question,string questionadder)
        ^~~~~

questionadder=quest;

return quest;

firstquest=quest("What is 96541-236547");

string quest(string question,string questionadder)