go语音基础之变量和常量

package main

import "fmt"

func main() {
	//不同类型变量的声明(定义)
	var a int
	var b float64

	a, b = 10, 3.14
	fmt.Println("a = ", a)
	fmt.Println("b = ", b)

}

a =  10
b =  3.14　

package main

import "fmt"

func main() {
	//不同类型变量的声明(定义)
	var (
		a int
		b float64
	)

	a, b = 10, 3.14
	fmt.Println("a = ", a)
	fmt.Println("b = ", b)
}

a =  10
b =  3.14

package main

import "fmt"

func main() {
	//可以自动推导类型
	var (
		a = 1
		b = 2.0
	)

	a, b = 10, 3.14
	fmt.Println("a = ", a)
	fmt.Println("b = ", b)
}

a =  10
b =  3.14

package main

import "fmt"

func main() {
	const i int = 10
	const j float64 = 3.14

	fmt.Println("i = ", i)
	fmt.Println("j = ", j)
}

i =  10
j =  3.14

package main

import "fmt"

func main() {
	const (
		i int     = 10
		j float64 = 3.14
	)

	fmt.Println("i = ", i)
	fmt.Println("j = ", j)
}

i =  10
j =  3.14

package main

import "fmt"

func main() {
       //自动推导类型
	const (
		i = 10
		j = 3.14
	)

	fmt.Println("i = ", i)
	fmt.Println("j = ", j)
}

i =  10
j =  3.14