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fmt.Printfは中身をstringしないとエラーになる

Posted at

go言語でfmt.Printfを扱う時にint型を表示しようとしてエラー出してしまうので、備忘録


package main

import (
	"fmt"
	"strconv"
)

func main() {

	var s string = "5"
        // int型に変換
	i, _ := strconv.Atoi(s)

	fmt.Printf(i)  # こちらはエラーになる
	// fmt.Printf("%v", i) # こちらはエラーにならない

}

実行結果


# command-line-arguments
.\main.go:17:12: cannot use i (type int) as type string in argument to fmt.Printf   

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