go语言int、string、float类型之间转换

package main

import (
	"strconv"
	"fmt"
)

func main()  {
	test1:="123"
	num:=HF_Atoi(test1)
	fmt.Printf("字符转换为数字：%d\n",num)//输出123
	str:=HF_Itoa(num)
	fmt.Printf("数字转换为字符：%v\n",str)//输出123
	flat:="123.456"
	flat32:= HF_Atof(flat)
	fmt.Printf("字符转换为float32：%v\n",flat32)//输出123.456
	flat64:= HF_Atof64(flat)
	fmt.Printf("字符转换为float64：%v\n",flat64)//输出123.456
	str_f32:= HF_Atos(float64(flat32),32)
	fmt.Printf("float32转换为字符：%v\n",str_f32)//输出1.23456E+02
	str_f64:= HF_Atos(flat64,64)
	fmt.Printf("float64转换为字符：%v\n",str_f64)//输出1.23456E+02
}

//! 字符串转数字
func HF_Atoi(s string) int {
	num, _ := strconv.Atoi(s)
	return num
}
//! 数字转字符串
func HF_Itoa(s int) string {
	num:= strconv.Itoa(s)
	return num
}

//! 字符串转float32
func HF_Atof(s string) float32 {
	num, _ := strconv.ParseFloat(s, 32)
	return float32(num)
}

//! 字符串转float64
func HF_Atof64(s string) float64 {
	num, _ := strconv.ParseFloat(s, 64)
	return num
}
//!float转换为字符串
func HF_Atos(s float64,f int) string{
	num:= strconv.FormatFloat(s, 'E', -1, f)
	return  num
}