Go编程基础-基础篇 1

package main

import "fmt"

func main() {
	var helloWorld string
	helloWorld = "Hello World!"
	fmt.Println(helloWorld)
}

Hello World!

package main

import "fmt"

func main() {
	var hello, world string
	hello = "Hello"
	world = "World"
	fmt.Println(hello, world)
}

Hello World

package main

import "fmt"

func main() {
	var num1 int
	fmt.Println("num1:", num1)
	num1 = 10
	fmt.Println("num1:", num1)
	var num2 = 20
	fmt.Println("num2:", num2)
}

num1: 0
num1: 10
num2: 20

package main

import "fmt"

func main() {
	var num1, num2 = 10, 20
	fmt.Println("num1: num2:", num1, num2)
	num1, num2 = 30, 40
	fmt.Println("num1: num2:", num1, num2)
}

num1: num2: 10 20
num1: num2: 30 40

package main

import "fmt"

func main() {
	helloWorld := "Hello World!"
	fmt.Println(helloWorld)
}

Hello World!

package main

import "fmt"

func main() {
	hello, world := "Hello", "World!"
	fmt.Println(hello,world)
}

Hello World!