我们如何截断float64类型以达到特定的精度?

问题描述

package main

import (
    "fmt"
    "strconv"
    )

func main() {
    k := 10/3.0
    i := fmt.Sprintf("%.2f", k)
    f,_ := strconv.ParseFloat(i, 2)
    fmt.Println(f)
}

我不得不编写上面的程序来将go float64变量的精度降低到2.在这种情况下，我同时使用了strconv和fmt.还有其他逻辑方法可以完成吗?

I had to write the program above to decrease the precision of a go float64 variable to 2. In this case I was using both strconv and fmt. Is there some other logical method by which it can be done?

推荐答案

您不需要任何额外的代码...它像

You don't need any extra code ... its as simple as

import (
    "fmt"
)

func main() {
    k := 10 / 3.0
    fmt.Printf("%.2f", k)
}

测试代码

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