Multi‑Case switch in Go
A switch can match multiple values in the same case. This is handy when different input values should trigger the exact same logic.
Syntax
switch expression {
case x, y:
// runs if expression == x OR expression == y
case v, w:
// runs if expression == v OR expression == w
case z:
// runs if expression == z
default:
// optional fallback when no case matches
}
Example: Classifying Weekdays
The snippet below groups weekday numbers into odd, even, and weekend categories.
package main
import "fmt"
func main() {
day := 5
switch day {
case 1, 3, 5:
fmt.Println("Odd weekday")
case 2, 4:
fmt.Println("Even weekday")
case 6, 7:
fmt.Println("Weekend")
default:
fmt.Println("Invalid day number")
}
}
Output when day := 5:
Odd weekday
