stream.cpp

// -*- compile-command: "g++ stream.cpp -o streams" -*-
#include <iostream>
using namespace std;

class ComplexInt {
private:
    int r, i;

public:
    ComplexInt(int realPart = 0, int imagPart = 0);

    // this return a reference to an ostream in this case
    friend ostream& operator<<(ostream& s, const ComplexInt& c);
    // TODO: see if this is also correct
    friend ostream& operator>>(ostream& s, const ComplexInt& c);
};



// this is for cout (print out things)
ostream& operator<<(ostream& s, const ComplexInt& c) {
    s << c.r;
    if (c.i >= 0)
        s << '+';
    s << c.i << 'i';
    
return s;
}

ostream& operator>>(ostream& s, const ComplexInt& c) {
    // see also what to do here
}

// then I can implement it
int main(int argc, char *argv[])
{
    int i;
    ComplexInt c = ComplexInt::ComplexInt(1, 2);
    
// the operator does not match correctly here 
    cout << i << c;
    
    return 0;
}