Length of vectors

#include <iostream>
#include <math.h>

using namespace std;

struct Point2f
{
    Point2f(const float _x,const float _y) : x(_x), y(_y) {}
    Point2f(const Point2f& other) : x(other.x), y(other.y) {}
    Point2f() : x(.0f), y(.0f) {}
    float x, y;
    Point2f operator +(const Point2f& other)
    { return Point2f((x + other.x), (y + other.y)); }
    Point2f operator -(const Point2f& other)
    { return Point2f(x - other.x, y - other.y); }
    Point2f operator =(const Point2f& other)
    { x = other.x; y = other.y; return *this;}
    float distance(Point2f& other)
    {return sqrt(pow(other.x - x, 2) + pow(other.y - y, 2));}
};

struct Vec2f
{
    Vec2f(const Point2f& _start,const Point2f& _end) : start(_start), end(_end) {}
    Vec2f(const Vec2f& other) : start(other.start), end(other.end) {}
    Vec2f() : start(), end() {}
    Point2f start, end;
    Vec2f operator +(const Vec2f& other)
    { return Vec2f(start + other.start, end + other.end); }
    Vec2f operator -(const Vec2f& other)
    { return Vec2f(start - other.start, end - other.end); }
    Vec2f operator =(const Vec2f& other)
    { start = other.start; end = other.end; return *this; }
    float getLength() {return start.distance(end);}
};

int main()
{
    const int count = 5;
    Point2f start, end;
    Vec2f vect[count];
    for (int i = 0; i < count; ++i)
    {
        printf("Enter x and y for begin of %d vector: ", i+1);
        scanf("%f%*c%f", &start.x, &start.y);
        printf("Enter x and y for end of %d vector: ", i+1);
        scanf("%f%*c%f", &end.x, &end.y);
        vect[i] = Vec2f(start, end);
    }
    printf("\nResult:\n");
    for (int i = 0; i < count; ++i)
    {
        printf("Length of %d vector: %.4f\n", i+1, vect[i].getLength());
        for (int s = i + 1; s < count; ++s)
        {
           printf("\tLength of vector(%d) - vector(%d): %.4f\n", i+1, s+1, (vect[i] - vect[s]).getLength());
           printf("\tLength of vector(%d) + vector(%d): %.4f\n", i+1, s+1, (vect[i] + vect[s]).getLength());
        }
    }
    system("pause");
}