my first Go exercise! Loops and Functions.

gistfile1.go

package main

import (
    "math"
    "fmt"
)

func Sqrt(x float64) (result float64) {
    // Newton's method
    result = x
    for i := 0; i < 10; i++ {
        result = result - ((math.Pow(result,2) - x) / (float64(2) * result))
    }
    return result
}

func main() {
    for i := 1; i < 10; i++ {
        floatI := float64(i)
        fmt.Printf("%v: %v, %v\n", i, Sqrt(floatI), math.Sqrt(floatI))
    }
}