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Golang - Show the Duplicate Case Error in Switch Statement Code Example

The code for Show the Duplicate Case Error in Switch Statement

package main
  
import "fmt"
  
// Main function
func main() {
    i := 1
    switch i {
        case 0, 1:
            fmt.Println("Hello World")
            fallthrough
        case 0:
            fmt.Println("Hello")
        case 1:
            fmt.Println("World")
        default:
            fmt.Println("Default it is.")
    }
}

/*
Output:
./main.go:12:9: duplicate case 0 in switch
	previous case at ./main.go:9:14
./main.go:14:9: duplicate case 1 in switch
	previous case at ./main.go:9:17
*/