Float64输入go中的常量，失去精度

Question

Consider the following code written in go:

package main

import "fmt"

func main() {
    const pi float64 = 22 / 7
    fmt.Println("pi value", pi)
}

here the value of pi is 3. The question is why is the value losing precision even though it is of type float64?

Answer 1

NeverMind, I got the answer.

package main

import "fmt"

func main() {
    const pi float64 = 22.0 / 7.0
    fmt.Println("pi value", pi)
}

Output 3.142857142857143. it seems types depend if type integer are be divided, it will return a integer regardless if the receiving var is type float64. so get a float value, devision has you occur between float values.