厚土Go学习笔记 | 10. 常量 与 数值常量

package main

import (
    "fmt"
)

const Pi = 3.14

func main() {
    const World = "厚土"
    fmt.Println("Hello", World)
    fmt.Println("Happy", Pi, "Day")

    const Truth = true
    fmt.Println("Go rules?", Truth)
}

Hello 厚土
Happy 3.14 Day
Go rules? true

package main

import (
    "fmt"
)

const (
    Big = 1 <<100
    Small = Big >> 99
)

func needInt(x int) int {
    return x * 10 + 1
}

func needFloat(x float64) float64 {
    return x * 0.1
}

func main() {
    //fmt.Println(Big)
    fmt.Println("Small is",Small)
    fmt.Println("needInt Small is",needInt(Small))
    fmt.Println("needFloat Small is",needFloat(Small))
    fmt.Println("needFloat Big is",needFloat(Big))
    //fmt.Println(needInt(Big))
}