Switch

Python

  1. def input():
  2.     return int(raw_input())
  3.  
  4. number = input()
  5. if number == 8:
  6.     print "Oxygen"
  7. elif number == 1:
  8.     print "Hydrogen"
  9. elif number == 2:
  10.     print "Helium"
  11. elif number == 11:
  12.     print "Sodium"
  13. else:
  14.     print "I have no idea what %d is" % number
  15.  
  16.  
  17. # Alternative solution
  18. number = input()
  19. db = {
  20.     1: "Hydrogen",
  21.     2: "Helium",
  22.     8: "Oxygen",
  23.     11: "Sodium",
  24. }
  25. print db.get(number, "I have no idea what %d is" % number)

Go

  1. package main
  2.  
  3. import (
  4.     "fmt"
  5.     "strconv"
  6. )
  7.  
  8. func str2int(s string) int {
  9.     i, err := strconv.Atoi(s)
  10.     if err != nil {
  11.         panic("Not a number")
  12.     }
  13.     return i
  14. }
  15.  
  16. func main() {
  17.     var number_string string
  18.     fmt.Scanln(&number_string)
  19.     number := str2int(number_string)
  20.  
  21.     switch number {
  22.     case 8:
  23.         fmt.Println("Oxygen")
  24.     case 1:
  25.         fmt.Println("Hydrogen")
  26.     case 2:
  27.         fmt.Println("Helium")
  28.     case 11:
  29.         fmt.Println("Sodium")
  30.     default:
  31.         fmt.Printf("I have no idea what %d is\n", number)
  32.     }
  33.  
  34.     // Alternative solution
  35.  
  36.     fmt.Scanln(&number_string)
  37.     db := map[int]string{
  38.         1:  "Hydrogen",
  39.         2:  "Helium",
  40.         8:  "Oxygen",
  41.         11: "Sodium",
  42.     }
  43.     number = str2int(number_string)
  44.     if name, exists := db[number]; exists {
  45.         fmt.Println(name)
  46.     } else {
  47.         fmt.Printf("I have no idea what %d is\n", number)
  48.     }
  49.  
  50. }