Presek na tocki lab 1.2

#include <stdio.h>

typedef struct point {
    float x;
    float y;
} point;

typedef struct segment {
    point a;
    point b;
} segment;
typedef struct prava {
    float k;
    point t;
} prava;

int intersect(segment s1, segment s2) {
    prava p1,p2;
    p1.k=(s1.b.y-s1.a.y)/(s1.b.x-s1.a.x);
    p1.t=s1.a;
    p2.k=(s2.b.y-s2.a.y)/(s2.b.x-s2.a.x);
    p2.t=s2.a;
    if(p1.k==p2.k)
        return 0;
    point t1;
    t1.x=(p2.k * p2.t.x - p1.k *p1.t.x + p1.t.y - p2.t.y)/(p2.k - p1.k);
    t1.y=p1.k * (t1.x - p1.t.x) + p1.t.y;
    int s;
    s=(((t1.x<=s1.a.x)&&(t1.x>=s1.b.x))||((t1.x>=s1.a.x)&&(t1.x<=s1.b.x)))&&(((t1.x<=s2.a.x)&&(t1.x>=s2.b.x))||((t1.x>=s2.a.x)&&(t1.x<=s2.b.x)));
    return s;

}
int main (){
float x1, y1, x2, y2;
    scanf("%f %f %f %f", &x1, &y1, &x2, &y2);
    point t1 = { x1, y1 };
    point t2 = { x2, y2 };
    segment o1 = { t1, t2 };
    scanf("%f %f %f %f", &x1, &y1, &x2, &y2);
    point t3 = { x1, y1 };
    point t4 = { x2, y2 };
    segment o2 = { t3, t4 };
    printf("%d\n", intersect(o1, o2));
    return 0;
}