变量、常量

1 func main() {
2     var a, b int
3     a, _ = 10, 12
4     fmt.Println(a, b)
5     var c int
6     fmt.Println(c)
7     var d bool
8     fmt.Println(d)
9 }

 1 package main
 2 
 3 import "fmt"
 4 
 5 const (
 6     name   = "g"
 7     age    = 26
 8     gender = "man"
 9 )
10 
11 func main() {
12     res := fmt.Sprintf("他:%s,今年%d", name, age)
13     fmt.Println(res)
14 }

 1 package main
 2 
 3 import "fmt"
 4 
 5 const (
 6     a = iota
 7     b
 8     c
 9 )
10 
11 func main() {
12     fmt.Println(a, b, c)
13 }