C++ Please be clear and thoroughly with explaination and how to fix/what's the right way to write the codes.

Trying to get the 'total answer' of quadrant with inputs of a, b, c, and x. And geting the 'total' discriminant or detla.

What am i doing wrong?

quadrant.h

quadrant.cpp

quadrantMain.cpp

Errors:

#1fndef QUADRANTH - #define QUADRANT-H using namespace std; class Quadrant private: double a, b, c, X; Quadrant() Quadrant (double A, double B, double C, double X); public: void getA; void getB; void getc) void getX); #endif