Go言語の便利なfmt.Sprintf ~任意の型と文字列をまとめて文字列(string型に)~ ref: http://qiita.com/Sekky0905/items/5a65602dce83551184b3

file0.go

package main

import (
    "fmt"
)

func main() {
    type Person struct {
        Age    int
        Height int
    }

    p := new(Person)
    p.Age = 26
    p.Height = 170

    fmt.Printf("年齢%d\n身長%d", p.Age, p.Height)
}

file1.txt

年齢26
身長170

file2.go

package main

import (
    "fmt"
)

func main() {
    type Person struct {
        Age    int
        Height int
    }

    p := new(Person)
    p.Age = 26
    p.Height = 170

    str := fmt.Sprintf("年齢:%d\n身長:%d", p.Age, p.Height)
    fmt.Println(str)

}

file3.txt

年齢:26
身長:170

file4.go

package main

import (
    "fmt"
)

func main() {
    type Person struct {
        Age    int
        Height int
    }

    p := new(Person)
    p.Age = 26
    p.Height = 170

    str := fmt.Sprintf("年齢:%d\n身長:%d", p.Age, p.Height)
    fmt.Println(str + "\n" + "ハンドルネーム:Sekky0905")

}