Go Language - Switch Statement
A switch statement is a shorter way to write a sequence of if-else statements. It runs the first case whose value is equal to the condition expression. The cases are evaluated from top to bottom, stopping when a case succeeds. If no case matches and there is a default case, its statements are executed.
Example 1:
package main
import "fmt"
func main() {
day := 6
switch day {
case 1:
fmt.Println("Sunday")
case 2:
fmt.Println("Monday")
case 3:
fmt.Println("Tuesday")
case 4:
fmt.Println("Wednesday")
case 5:
fmt.Println("Thursday")
case 6:
fmt.Println("Friday")
case 7:
fmt.Println("Saturday")
}
}
Output:
Example 2: break breaks the inner switch
package main
import "fmt"
func main() {
loop:
for i := 0; i < 9; i++ {
fmt.Printf("%d", i)
switch {
case i == 1:
fmt.Println("start")
case i == 8:
fmt.Println("end")
case i == 6:
fmt.Println("stop")
break loop
case i > 3:
fmt.Println("sleeping..")
break
default:
fmt.Println("default..")
}
}
}
Output:
