Lab1

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

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

typedef struct line
{
    point p1;
    point p2;
} line;

typedef struct reads
{
    line *p;
    int n;
    FILE *in;
    FILE *out;
    float s;
} reads;

void read(reads *c)
{
    fopen_s(&c->in, "C:\\Users\\Infidelis\\Desktop\\input.txt", "r");
    fscanf_s(c->in, "%d", &c->n);
    c->p = (line*)malloc(c->n * sizeof(line));
    for (int i = 0; i < c->n; i++)
        fscanf_s(c->in, "%d%d%d%d", &c->p[i].p1.x, &c->p[i].p1.y, &c->p[i].p2.x, &c->p[i].p2.y);
    fclose(c->in);
}

float sum(reads *c)
{
    c->s = 0;
    for (int i = 0; i < c->n; i++)
        c->s = c->s + sqrt(pow(c->p[i].p1.x - c->p[i].p2.x, 2) + pow(c->p[i].p1.y - c->p[i].p2.y, 2));
    return c->s;
}

void end(reads *c)
{
    fopen_s(&c->out, "C:\\Users\\Infidelis\\Desktop\\output.txt", "w");
    fprintf_s(c->out, "%f", sum(c));
    fclose(c->out);
    free(c);
}

void main()
{
    reads *c = (reads*)malloc(sizeof(reads));
    read(c);
    sum(c);
    end(c);
}