将下列程序补充完整:
#include
#include
usingnamespacestd;
classcomplex
{
Public:
intreal:
intimag;
complex(intr=0,inti=0)
{
real=r;
imag=i;
}
};
complexoperator+(__________,complex&b)
{
intr=a.real+b.real:
inti=a.imag+b.imag;
return__________;
}
voidmain()
{
complexx(1,2),y(3,4),z;
z=x+y;
cout<
}