HTMLify

package main

import (
	"fmt"
	"strconv"
)

func main() {
	fmt.Print("Please enter a number: ")

	var input string
	fmt.Scanln(&input)

	number, err := strconv.ParseFloat(input, 64)

	if err != nil {
		fmt.Println("That is not a valid number.")
	} else {
		fmt.Printf("You entered the number: %f\n", number)
	}
}