operator overloading in Programming

 

What is operator overloading?

Operator Overloading is a very essential element to perform the operations on user-defined data types. By operator overloading we can modify the default meaning to the operators like +, -, *, /, <=, etc. 

For example -

The following code is for adding two complex number using operator overloading-

class complex{
private:
float r, i;
public:
complex(float r, float i){
this->r=r;
this->i=i;
}
complex(){}
void displaydata(){
cout<<”real part = “<<r<<endl;
cout<<”imaginary part = “<<i<<endl;
}
complex operator+(complex c){
return complex(r+c.r, i+c.i);
}
};
int main(){
complex a(2,3);
complex b(3,4);
complex c=a+b;
c.displaydata();
return 0;
}