#include "stdafx.h"//del
#include <iostream>
#include <cmath>
#include <complex>
using namespace std;
complex<double> func()
{
complex<double > result(0, 0);
complex<double > eight(8, 0);
complex<double > fifteen(15, 0);
complex<double > I(0, 1);
result = sqrt(-fifteen + eight*I);
return result;
}
int main()
{
complex<double> result(0, 0);
result = func();
if (result.imag() == 0)
cout << "answer= " << result.real() << endl;
else
if (result.imag() == 1)
cout << "answer= " << result.real() << " + i" << endl;
else
cout << "answer= " << result.real() << " + " << result.imag() << "i" << endl;
return 0;
}
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