C++ examples for Class:Operator Overload
Overload plus operator (+) for Complex class
#include <iostream> #include <iomanip> using namespace std; // declaration section class Complex/* www.j a v a2 s . co m*/ { private: double realPart; // declare realPart as a double variable double imaginaryPart; // declare imaginaryPart as a double variable public: Complex(double real = 0.0, double imag = 0.0) // inline constructor { realPart = real; imaginaryPart = imag; } void showComplexValues(); // accessor prototype void assignNewValues(double real, double imag); // inline mutator Complex operator+(const Complex&); // prototype for the addition operator }; // implementation section void Complex::showComplexValues() // accessor { char sign = '+'; if (imaginaryPart < 0) sign = '-'; cout << realPart << ' ' << sign << ' ' << abs(imaginaryPart) << 'i'; } Complex Complex::operator+(const Complex& complex2) { Complex temp; temp.realPart = realPart + complex2.realPart; temp.imaginaryPart = imaginaryPart + complex2.imaginaryPart; return temp; } int main() { Complex a(2.3, 10.5), b(6.3, 19.2), c; // declare three objects cout << "Complex number a is "; a.showComplexValues(); cout << "\nComplex number b is "; b.showComplexValues(); c = a + b; // add two complex numbers cout << "\n\nThe sum of a and b: "; c.showComplexValues(); return 0; }