// vektory.cpp: Definuje vstupní bod pro aplikaci.
//

#include "vektory.h"
#include <stdio.h>
#include <math.h>

using namespace std;


void soucet(double v1[2], double v2[2], double v_result[2])
{
    v_result[0] = v1[0] + v2[0];
    v_result[1] = v1[1] + v2[1];
}

void rozdil(double v1[2], double v2[2], double v_result[2])
{
    v_result[0] = v1[0] - v2[0];
    v_result[1] = v1[1] - v2[1];
}
void vector_magnitude(double v[2], double* magnitude)
{
    *magnitude = sqrt(pow(v[0], 2) + pow(v[1], 2));
}

void tisk(double v[2])
{
    printf("[%.2f, %.2f]", v[0], v[1]);
}

int main() {
    double v1[2];
    double v2[2];
    double v_result[2];
    double magnitude = 0;
    printf("Vektorova kalkulacka");
        printf("Zadej x1: ");
    scanf("%lf", &v1[0]);
    printf("Zadej y1: ");
    scanf("%lf", &v1[1]);
    printf("Zadej x2: ");
    scanf("%lf", &v2[0]);
    printf("Zadej y2: ");
    scanf("%lf", &v2[1]);
    printf("Co chcete s vektory delat? (soucet, rozdil): ");
    int choice;
    scanf("%d", &choice);
    switch (choice) {
    case 1:
        soucet(v1, v2, v_result);
        printf("Soucet vektoru: ");
        tisk(v_result);
        printf("Velikost vetoru: ");
        vector_magnitude(v_result, &magnitude);
        tisk(magnitude);
        break;
    case 2:
        rozdil(v1, v2, v_result);
        printf("Rozdil vektoru: ");
        tisk(v_result);
        printf("Velikost vetoru: ");
        vector_magnitude(v_result, &magnitude);
        tisk(magnitude);
        break;
    default:
        printf("Neznamy prikaz");
        return 1;
    }
}