#include <stdio.h>
#include <stdlib.h>
#include <math.h>
int main(int argc, char const *argv[]) {
	double x, y;
	printf("Insert real number first, then imaginary y part\n");
	while(1) {
		scanf(" %lf", &x);
		scanf(" %lf", &y);
		double abs = pow(x, 2) + pow(y, 2);
		double r = sqrt(abs);
		double phi = acos(x / r);
		if(y < 0)
			phi *= (-1);
		printf("\nr = sqrt( %lf ) = %.4lf\n", abs, r);
		printf("phi = %.4lf\n\n", phi);
		printf("cartesian:      x = %lf; y = %lf\n", x, y);
		printf("trigonometric:  %lf * ( cos( %lf ) + i * sin( %lf ))\n", r, phi, phi);
		printf("exponential:    %lf ^ ( i * %lf)\n", r, phi);
	}
	return 0;
}