Category : addition

#include <iostream> #include <string> using namespace std; namespace ComplexNumberNamespace { typedef struct _Data { double real; double imag; }Data; class ComplexNumber { private: Data data{}; public: ComplexNumber(); ComplexNumber(float real, float imag); ComplexNumber(ComplexNumber&); string to_string(); void operator = (ComplexNumber&); ComplexNumber operator + (ComplexNumber& rhs); }; string ComplexNumber::to_string() { std::string str; str = std::to_string(data.real); str.append(" + i ..

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