Instruction: Fix the error lines

How to solve the problem error in the Code.

Thank You

main.cpp X #ifndef COMPLEX H #define COMPLEX H class Complx { public: Complx(); Complx (float re, float imag): -Complx (); void sum (Complx &a, Complx &b); void subtract (Complxca, Complx &b); void multiply (Complx a, Complx &b); void divide (Complx &a, Complxb) void read(); void print (); private: float real; float imag: void polar ( void conjugate 0. Econo class Complx El public: Complx (); Complx (float re, float imag); -Complx (); void sum (Complx &a, Complx &b); void subtract (Complx&a, Complx &b): void multiply (Complx &a, Complx &b): void divide (Complx &a, Complx &b) void read(); void print (); private: float real; float imag; void polar(); void conjugate ; #endit float real; float imag; void polar(); void conjugate(); Fendif Logs & others Code::Blocks X Search results X Ccccx Build log x Build messages * Cppche File Line Message --- Build: Debug in Proyecto 5 (compiler: GNU GCC Compiler) - C:\Program Fil... undefined reference to WinMain@le! error: ld returned ei tu Bu ailed: 2 warning 0 minute(s) 0 seconds Simain.cpp C/C++ Windows (CR-LF) WINDOWS-1252 Line 6 Col 18, Pos 85 earch #endir Logs & others Code::Blocks X Search results X Ccccx Build log x Build messa File Line C:\Program Fil... Message ==- Build: Debug in Proyecto 5 (compiler: GNU GCC Comp undefined reference to WinMain@16! error: 1d returned 1 exit status === Build failed: 2 error(s), o warning(s) 0 minute(s), Windows (CRLF) WINDOWS-1252 C/C++ Line 6 C Eyecto 5\main.cpp o Ela Te to search