#include <stdio.h>
#include <math.h>
#define PI 3.141592

int c = 0;

void c2p();
void p2c();

struct complexcart
{
    double real;
    double imaginary;
} point1, point2, point3, cart_point4, cart_point5, cart_point6, *p;

struct complexpol
{
    double radius;
    double angle;
} point4, point5, point6, pol_point1, pol_point2, pol_point3, *q;

void main(){
    struct complexcart point1 = {3, 0.8};
    struct complexcart point2 = {0, log10(4)};
    struct complexcart point3 = {45.245, 0.235};

    struct complexpol point4 = {3, (PI/17)};
    struct complexpol point5 = {4, (PI/9)};
    struct complexpol point6 = {1, (PI/12)};


    while (c < 6)
    {
        if (c == 0)
        {
            struct complexcart *p = &point1;
            c2p();
            c++;
        }
        if (c == 1)
        {
            struct complexcart *p = &point2;
            c2p();
            c++;
        }
        if (c == 2)
        {
            struct complexcart *p = &point3;
            c2p();
            c++;
        }
        if (c == 3)
        {
            struct complexpol *q = &point4;
            p2c();
            c++;
        }
        if (c == 4)
        {
            struct complexpol *q = &point5;
            p2c();
            c++;
        }
        if (c == 5)
        {
            struct complexpol *q = &point6;
            p2c();
            c++;
        }
    }
    printf("Converted from cartesian to polar: n");
    printf("%.0lf + %.1lfi -> %lf * e^(%lfi) n", point1.real, point1.imaginary, pol_point1.radius, pol_point1.angle);
    printf("%.0lf + %lfi -> %lf * e^(%lfi) n", point2.real, point2.imaginary, pol_point2.radius, pol_point2.angle);
    printf("%.3lf + %.3lfi -> %lf * e^(%lfi) n", point3.real, point3.imaginary, pol_point3.radius, pol_point3.angle);

    printf("Converted from polar to cartesian: n");
    printf("%.0lf * e^(%lfi) -> %lf + %lfi n", point4.radius, point4.angle, cart_point4.real, cart_point4.imaginary);
    printf("%.0lf * e^(%lfi) -> %lf + %lfi n", point5.radius, point5.angle, cart_point5.real, cart_point5.imaginary);
    printf("%.0lf * e^(%lfi) -> %lf + %lfi n", point6.radius, point6.angle, cart_point6.real, cart_point6.imaginary);
}

void c2p(){
    if (c == 0)
    {
        p = &point1;
        struct complexpol polar_point1 = {sqrt(pow((*p).real, 2) + pow((*p).imaginary, 2)), atan((*p).imaginary/(*p).real)};
    }
    if (c == 1)
    {
        p = &point2;
        struct complexpol polar_point2 = {sqrt(pow((*p).real, 2) + pow((*p).imaginary, 2)), atan((*p).imaginary/(*p).real)};
    }
    if (c == 2)
    {
        p = &point3;
        struct complexpol polar_point3 = {sqrt(pow((*p).real, 2) + pow((*p).imaginary, 2)), atan((*p).imaginary/(*p).real)};
    }
}

void p2c(){
    if (c == 3)
    {
        q = &point4;
        struct complexcart cart_point4 = {(*q).radius * cos((*q).angle), (*q).radius * sin((*q).angle)};
    }
    if (c == 4)
    {
        q = &point5;
        struct complexcart cart_point5 = {(*q).radius * cos((*q).angle), (*q).radius * sin((*q).angle)};
    }
    if (c == 5)
    {
        q = &point6;
        struct complexcart cart_point6 = {(*q).radius * cos((*q).angle), (*q).radius * sin((*q).angle)};
    }
}