SQRT implementation

sqrt.go

package main

import (
	"fmt"
	"math"
)

func Sqrt(x float64) float64 {
	z := float64(1)
	for i := 1; i <= 10; i++ {
		z -= (z*z-x)/(2*z)
		fmt.Printf("Sqrt approximation of %v attempt %v = %v\n", x, i, z)
	}
	return z
}

func main() {
	p := 10.0
	fmt.Println(Sqrt(p)) // newton's technique  
	fmt.Println(math.Sqrt(p)) // validation by an inbuilt function 
}