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In this article, you will learn how to pass and return objects in C ++In programming, objects can be passed to a function and returned from the function.
In C ++In programming,Objects can be passed to a function in a way similar to structures.
C ++The program adds two complex numbers by passing objects to the function.
#include <iostream> using namespace std; class Complex { private: int real; int imag; public: Complex(): real(0), imag(0) { } void readData() { cout << "Please enter the real and imaginary numbers:" << endl; cin >> real >> imag; } void addComplexNumbers(Complex comp1, Complex comp2) { // real represents the object c3actual data, because it uses code c3.add(c1, c2); You can call this function; real = comp1.real+comp2.real; // imag represents the object c3the imag data of, because it uses code c3.add(c1, c2); You can call this function imag = comp1.imag+comp2.imag; } void displaySum() { cout << "Sum = " << real << ""+" << imag << "i"; } }; int main() { Complex c1,c2,c3; c1.readData(); c2.readData(); c3.addComplexNumbers(c1, c2); c3.displaySum(); return 0; }
Output result
Please enter the real and imaginary numbers: 2 4 Please enter the real and imaginary numbers: -3 4 Sum = -1+8i
In C ++In programming, The way objects can be returned from a function is similar to structures.
In this program, the sum of complex numbers (objects) will be returned to the main() function and displayed.
#include <iostream> using namespace std; class Complex { private: int real; int imag; public: Complex(): real(0), imag(0) { } void readData() { cout << "Please enter the real and imaginary numbers:" << endl; cin >> real >> imag; } Complex addComplexNumbers(Complex comp2) { Complex temp; //real represents the object c3actual data, because it uses code c3.add(c1, c2); You can call this function; temp.real = real+comp2.real; //imag represents the object c3the imag data of, because it uses code c3.add(c1, c2); You can call this function temp.imag = imag+comp2.imag; return temp; } void displayData() { cout << "Sum = " << real << "";+" << imag << "i"; } }; int main() { Complex c1, c2, c3; c1.readData(); c2.readData(); c3 = c1.addComplexNumbers(c2); c3.displayData(); return 0; }