LAB 9

#include <stdio.h>
#include <stdlib.h>

#define MAX_W 25

struct point
{
    int x, y;
};

void czytaj_do_tablicy(char* tab[])
{
    char buffer[100];
    int i;
    for(i = 0; i < MAX_W; i++)
    {
        if(fgets(buffer,sizeof(buffer),stdin))
        {
            tab[i] = malloc((strlen(buffer) + 1)*sizeof(char));
            strcpy(tab[i],buffer);
        }
        else
        {
            return;
        }
    }
}
void inicjuj_punkty(struct point* points[])
{
    int i;
    for(i = 0; i < MAX_W; i++)
    {
        points[i] = (struct point*)malloc((i+1)*sizeof(struct point));
    }
}
void wypiszArgument( char* arg )
{
    printf("%s", arg);
}
void wypiszArgumentV2( char* arg, void (*f)(char*))
{
    f(arg);
}
int comparePoints(const void* e1, const void* e2)
{
    struct point* p1 = (struct point*)e1;
    struct point* p2 = (struct point*)e2;

    float d1 = sqrt(p1->x*p1->x + p1->y*p1->y);
    float d2 = sqrt(p2->x*p2->x + p2->y*p2->y);

    if(d1 > d2) return 1;
    if(d1 < d2) return -1;
    if(d1 == d2) return 0;
}
int main ( int argc, char *argv[] )
{

    /* zadanie 1
    char *tab[MAX_W];
    czytaj_do_tablicy(tab);
    */

    /* zadanie 2
    struct point *points[MAX_W];

    inicjuj_punkty(points);

    points[10][5].x = 0;
    (*(*(points + 10) + 5)).x = 0;
    */

    /* zadanie 3
    int i;
    for(i = 1; i < argc; ++i)
    {
        printf("%s\n",argv[i]);
    }
    */
    /* zadanie 4
    wypiszArgumentV2("blabla",wypiszArgument);
    */

    /* zadanie 5 */

    int ilosc = 100;
    struct point* points = (struct point*)malloc(ilosc*sizeof(struct point));
    int i;
    for(i = 0; i < ilosc; ++i)
    {
        int a = points[i].x = rand() % 101;
        int b = points[i].y = rand() % 101;
    }


    puts("przed sortowaniem");
    for(i = 0; i < ilosc; ++i)
    {
        struct point c = points[i];

        float d = sqrt(c.x*c.x + c.y*c.y);
        printf("%f\n",d);
    }

    qsort(points,ilosc,sizeof(struct point),comparePoints);

    puts("po sortowaniu");
    for(i = 0; i < ilosc; ++i)
    {
        struct point c = points[i];

        float d = sqrt(c.x*c.x + c.y*c.y);
        printf("%f\n",d);
    }

    free(points);


    system("pause");

    return 0;
}