#include <iostream>

/* Complex numbers */

typedef struct {
        int re;
        int im;
} CPLX;

CPLX cadd( CPLX z1, CPLX z2 )
{
        CPLX zt;
        zt.re = z1.re + z2.re;
        zt.im = z1.im + z2.im;
        return zt;
}

int main( void )
{
        CPLX za, zb, zc;
        za.re = 1;
        za.im = 2;
        zb = za;

        zc = cadd( za, zb );
        std::cout << "zc.re = "
             << zc.re
             << " zc.im = "
             << zc.im << '\n';
}