C++ program to add two complex numbers

#include<iostream>
using namespace std;
class complex
{
private:
double r;
double i;
public:
complex();
void add(complex,complex);
void read();
void print();

};
complex::complex()
{
r=i=0;
}
void complex:: add(complex op1,complex op2)
{
r=op1.r+op2.r;
i=op1.i+op2.i;
}
void complex::print()
{
cout<<r<<" + i*"<<i<<endl;
}
void complex::read()
{
cout<<"Enter the real part for operand"<<endl;
cin>>r;
cout<<"Enter the imagenary part for operand"<<endl;
cin>>i;

}
int main()
{
complex operand1,operand2,result;
cout<<"First operand "<<endl;
operand1.read();
cout<<"Second operand "<<endl;
operand2.read();
result.add(operand1,operand2);
cout<<"The sum is..."<<endl;
result.print();
return 0;
}