3.6 二进制，十进制，十六进制转换

package main

import (
	"fmt"
	"strconv"
)

const bin = "10111"
const hex = "1A"
const oct = "12"
const dec = "10"
const floatNum = 16.123557

func main() {

	// Converts binary value into hex
	v, _ := ConvertInt(bin, 2, 16)
	fmt.Printf("Binary value %s converted to hex: %s
", bin, v)

	// Converts hex value into dec
	v, _ = ConvertInt(hex, 16, 10)
	fmt.Printf("Hex value %s converted to dec: %s
", hex, v)

	// Converts oct value into hex
	v, _ = ConvertInt(oct, 8, 16)
	fmt.Printf("Oct value %s converted to hex: %s
", oct, v)

	// Converts dec value into oct
	v, _ = ConvertInt(dec, 10, 8)
	fmt.Printf("Dec value %s converted to oct: %s
", dec, v)

	//... analogically any other conversion
	// could be done.

}

// ConvertInt converts the given string value of base
// to defined toBase.
func ConvertInt(val string, base, toBase int) (string, error) {
	i, err := strconv.ParseInt(val, base, 64)
	if err != nil {
		return "", err
	}
	return strconv.FormatInt(i, toBase), nil
}

/*
Binary value 10111 converted to hex: 17
Hex value 1A converted to dec: 26
Oct value 12 converted to hex: a
Dec value 10 converted to oct: 12

*/