/* Square a complex number */
#include <iostream.h>

void squareComplex(double *aPtr, double *bPtr)
{   
	double a, b, aAns, bAns;
	
	// Retrieve a and b from the pointers
	a = *aPtr;
	b = *bPtr;
	
	// Compute the real and imaginary parts of answer 
	aAns = (a*a) - (b*b);
	bAns = 2*a*b;
	
	// Return the answer via the pointers
	*aPtr = aAns;
	*bPtr = bAns;
}

void main()
{
	double	a = 4.0, b = 1.5;
	
	squareComplex(&a, &b);
	
	cout << "Answer: (" << a << " + "
		<< b << "i)" << endl;
}