Challenge: Distance Between Points

Lab C++ Beginner 10 points

Create a struct Point with double x, y. Read two points (four numbers) and print the distance between them with 2 decimal places. The distance is sqrt((x2 - x1)² + (y2 - y1)²).

Input

x1 y1 x2 y2.

Output

The distance, like 5.00.

Example

Input

0 0 3 4

Output

5.00

Sample input available Sample output available

Editor

C++

Hints

You can cin straight into members: cin >> a.x >> a.y;

#include <cmath> for sqrt.

Solution explanation

A Point keeps each pair of coordinates together, which makes the function easy to read.

Show solution

#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;

struct Point {
    double x;
    double y;
};

double distance(Point a, Point b) {
    double dx = b.x - a.x;
    double dy = b.y - a.y;
    return sqrt(dx * dx + dy * dy);
}

int main() {
    Point a, b;
    cin >> a.x >> a.y >> b.x >> b.y;
    cout << fixed << setprecision(2) << distance(a, b) << "\n";
    return 0;
}

Output

Answer