Reddit DailyProgrammer Challenge #138 Repulsion Force

repulsionforce.go

package main

import (
	"bufio"
	"fmt"
	"math"
	"os"
	"strconv"
	"strings"
)

func main() {
	reader := bufio.NewReader(os.Stdin)

	p1info, _ := reader.ReadString('\n')
	p2info, _ := reader.ReadString('\n')

	p1 := strings.Fields(p1info)
	p2 := strings.Fields(p2info)

	p1M, _ := strconv.ParseFloat(p1[0], 64)
	p1X, _ := strconv.ParseFloat(p1[1], 64)
	p1Y, _ := strconv.ParseFloat(p1[2], 64)

	p2M, _ := strconv.ParseFloat(p2[0], 64)
	p2X, _ := strconv.ParseFloat(p2[1], 64)
	p2Y, _ := strconv.ParseFloat(p2[2], 64)

	dx := p1X - p2X
	dy := p1Y - p2Y

	distance := math.Sqrt(dx*dx + dy*dy)
	force := p1M * p2M / (distance * distance)

	fmt.Printf("%.4f\n", force)
}