Friend Function Example in C++

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This code defines a class Complex which represents a complex number with a real and an imaginary part. The class has a constructor, which initializes the real and imaginary parts of the complex number, and a friend function operator+ which overloads the + operator for two complex numbers. The operator+ function takes two complex numbers c1 and c2 as input, and returns a new complex number which is the sum of the two complex numbers.

In the main function, two complex numbers c1 and c2 are initialized with real and imaginary values. Then, the + operator is used to add c1 and c2 and store the result in c3. Finally, the real and imaginary parts of c3 are printed.

Source Code

#include<iostream>
using namespace std;
class Complex
{
public :
    int real;
    int img;
    friend Complex operator +(Complex c1,Complex c2);
};
Complex operator+(Complex c1,Complex c2)
{
    Complex temp;
    temp.real=c1.real+c2.real;
    temp.img=c1.img+c2.img;
    return temp;
}
int main()
{
    Complex c1,c2,c3;
    c1.real=5;
    c1.img=3;
    c2.real=10;
    c2.img=5;
    c3=c1+c2;
    cout<<"\nReal : "<<c3.real;
    cout<<"\nImg : "<<c3.img;
    return 0;
}

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Output

Real : 15
Img : 8

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• Why we using namespace std in C++
• Getting Inputs in C++
• std::string class in C++
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• Arrays in C++
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• Function In C++
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• Template In C++
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• Default Constructor in C++
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• Pure Virtual Function & Abstract Class in C++
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• Printing Positive & Negative Numbers
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For Loop

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• Number Patterns using For Loop
• Odd & Even Numbers using For Loop
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• Diamond Pattern Outline in C++
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Friend Function in C++

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Operator Overloading Example

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Operator and Function Example

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• Constructor Example in C++
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• Inline Function in C++
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• Operator Overloading in C++
• Friend Function in C++
• Insertion Overload in C++
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• Single Inheritance in C++
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• Function Overriding in C++
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