访问 https://swift.org/download/
找到 Windows 10：x86_64
下载 swift-5.10-RELEASE-windows10.exe  大约490MB
建议安装在 D:\Swift\ ，安装后大约占2.56GB

官网文档：https://www.swift.org/documentation/

中文教程：The swift programming language 中文版

运行  cmd

swiftc -v
Swift version 5.10 (swift-5.10-RELEASE)
Target: x86_64-unknown-windows-msvc

cd D:\Swift\

mkdir test ; cd  test

用 Notepad++ 编写  hello.swift  如下

let a = 2
let b = 3
print("a+b=", a+b)

SET SDKROOT=D:\Swift\Platforms\5.10.0\Windows.platform\Developer\SDKs\Windows.sdk

可以在环境变量中设置，编译执行  swiftc hello.swift -o hello.exe -sdk %SDKROOT%

运行  hello.exe

编写  fibonacci.swift  如下

import Foundationvar i:Int = 0
if CommandLine.arguments.count > 1 {let str = CommandLine.arguments[1]let number = NumberFormatter().number(from: str)i = number!.intValue
} else {print(" usage: fibonacci.exe n ")exit(0)
}
// 计算 斐波那契数列（Fibonacci sequence）
func fib(n: Int) -> Int {if n <= 0 {return n}   var last:Int = 0, next:Int = 1for _ in 1..<n {(last, next) = (next, next + last)}return next
}
print("fib(\(i))=", fib(n:i))

编写 compile.bat  如下

@echo off
SET SDKROOT=D:\Swift\Platforms\5.10.0\Windows.platform\Developer\SDKs\Windows.sdk
swiftc %1.swift -o %1.exe -sdk %SDKROOT%

编译执行  compile.bat  fibonacci

运行 fibonacci.exe 30

fib(30)= 832040

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