All in the Code:
package main
import "fmt"
func main(){
// 一次性声明多个变量
var n1, n2, n3 int
fmt.Println("ni:", n1, "n2:", n2, "n3:", n3)
// 一次性声明多个不同类型的变量
var n4, name, n5 = 100, "tom", 888
fmt.Println("n4:", n4, "name:", name, "n5:", n5)
// 类型推倒
n7, sec_name, n8 := 200, "jack", 666
fmt.Println("n7:", n7, "sec_name:", sec_name, "n8:", n8)
}