Panduan untuk menyelesaikan keraguan umum tentang memulakan Golang: Injil Xiaobai

# macOS
brew install go

# Linux
sudo apt install golang-go

# Windows
choco install golang

package main

import "fmt"

func main() {
    fmt.Println("你好，世界！")
}

go run hello.go

var name string = "小明"

name := "小美"

// 整数类型
var age int = 18

// 浮点数类型
var weight float64 = 60.5

// 布尔类型
var isMale bool = true

func average(numbers []int) float64 {
    var sum float64
    for _, number := range numbers {
        sum += float64(number)
    }
    return sum / float64(len(numbers))
}

func divide(x, y int) (int, error) {
    if y == 0 {
        return 0, errors.New("除数不能为0")
    }
    return x / y, nil
}

// main.go

package main

import "fmt"

func average(numbers []int) float64 {
    var sum float64
    for _, number := range numbers {
        sum += float64(number)
    }
    return sum / float64(len(numbers))
}

func main() {
    numbers := []int{1, 2, 3, 4, 5}
    avg := average(numbers)
    fmt.Printf("平均值为：%.2f\n", avg)
}

平均值为：3.00