package main

import (
	"fmt"
	"os"
)

func main() {
	// sprintf
	name := "wudi"
	s1 := fmt.Sprintf("姓名是%s,年龄是%d","wudi1",18)
	fmt.Println(s1)
	// printf
	fmt.Printf("字符串是%s\n","wudi2")
	// sprint
	s2 := fmt.Sprint(name)
	fmt.Println(s2)

	//
	fmt.Fprintf(os.Stdout, "格式化 %s\n", "error")

}