#include
#include
using namespace std;
int main()
{
complex cmpx1(1, 0);
complex cmpx2(1, 1);
cout << "cmpx1: " << cmpx1 << endl << "cmpx2: " << cmpx2 << endl;
cout << "cmpx1 + cmpx2: " << cmpx1 + cmpx2 << endl;
cout << "cmpx1 * cmpx2: " << cmpx1 * cmpx2 << endl;
cmpx1 += 2.0;
cout << "cmpx1 += 2.0: " << cmpx1 << endl;
cout << "sin(cmpx2): " << sin(cmpx2) << endl;
return 0;
}