Les chiffres romain bien que peut efficace sont très utilisés encore aujourd'hui pour numéroter des annexes, suite de films et des pages de prélude. Voici leur représentation classique :
Nombre Romain | Nombre décimal | Nombre octal | Nombre hexadécimal |
---|---|---|---|
I | 1 | 1 | 1 |
II | 2 | 2 | 2 |
III | 3 | 3 | 3 |
IV | 4 | 4 | 4 |
V | 5 | 5 | 5 |
VI | 6 | 6 | 6 |
VII | 7 | 7 | 7 |
VIII | 8 | 10 | 8 |
IX | 9 | 11 | 9 |
X | 10 | 12 | A |
XI | 11 | 13 | B |
XII | 12 | 14 | C |
XIII | 13 | 15 | D |
XIV | 14 | 16 | E |
XV | 15 | 17 | F |
... | ... | ... | ... |
Toutefois, il est a noter que les chiffres romain ne dépasse que de très peu les milliers en terme de numérotation. Pour pouvoir générer automatiquement les nombres à partir de l'équivalence numérique, vous trouverez la réponse que vous souhaitez, à l'aide du code source ABC suivant :
- HOW TO RETURN numbertoromain(x):
- PUT "" IN s
- PUT floor ((x mod 1000) / 100) IN r
- SELECT:
- r = 9:
- PUT s ^ "CM" IN s
- r = 8:
- PUT s ^ "DCCC" IN s
- r = 7:
- PUT s ^ "DCC" IN s
- r = 6:
- PUT s ^ "DC" IN s
- r = 5:
- PUT s ^ "D" IN s
- r = 4:
- PUT s ^ "CD" IN s
- r = 3:
- PUT s ^ "CCC" IN s
- r = 2:
- PUT s ^ "CC" IN s
- r = 1:
- PUT s ^ "C" IN s
- ELSE:
- PUT s ^ "" IN s
- PUT floor ((x mod 100) / 10) IN r
- SELECT:
- r = 9:
- PUT s ^ "XC" IN s
- r = 8:
- PUT s ^ "LXXX" IN s
- r = 7:
- PUT s ^ "LXX" IN s
- r = 6:
- PUT s ^ "LX" IN s
- r = 5:
- PUT s ^ "L" IN s
- r = 4:
- PUT s ^ "XL" IN s
- r = 3:
- PUT s ^ "XXX" IN s
- r = 2:
- PUT s ^ "XX" IN s
- r = 1:
- PUT s ^ "X" IN s
- ELSE:
- PUT s ^ "" IN s
- PUT (x mod 10) IN r
- SELECT:
- r = 9:
- PUT s ^ "IX" IN s
- r = 8:
- PUT s ^ "VIII" IN s
- r = 7:
- PUT s ^ "VII" IN s
- r = 6:
- PUT s ^ "VI" IN s
- r = 5:
- PUT s ^ "V" IN s
- r = 4:
- PUT s ^ "IV" IN s
- r = 3:
- PUT s ^ "III" IN s
- r = 2:
- PUT s ^ "II" IN s
- r = 1:
- PUT s ^ "I" IN s
- ELSE:
- PUT s ^ "" IN s
- RETURN s
-
- FOR i IN {1..100}:
- WRITE i
- WRITE " = "
- WRITE numbertoromain(i) /
on obtiendra le résultat suivant :
1 = I2 = II
3 = III
4 = IV
5 = V
6 = VI
7 = VII
8 = VIII
9 = IX
10 = X
11 = XI
12 = XII
13 = XIII
14 = XIV
15 = XV
16 = XVI
17 = XVII
18 = XVIII
19 = XIX
20 = XX
21 = XXI
22 = XXII
23 = XXIII
24 = XXIV
25 = XXV
26 = XXVI
27 = XXVII
28 = XXVIII
29 = XXIX
30 = XXX
31 = XXXI
32 = XXXII
33 = XXXIII
34 = XXXIV
35 = XXXV
36 = XXXVI
37 = XXXVII
38 = XXXVIII
39 = XXXIX
40 = XL
41 = XLI
42 = XLII
43 = XLIII
44 = XLIV
45 = XLV
46 = XLVI
47 = XLVII
48 = XLVIII
49 = XLIX
50 = L
51 = LI
52 = LII
53 = LIII
54 = LIV
55 = LV
56 = LVI
57 = LVII
58 = LVIII
59 = LIX
60 = LX
61 = LXI
62 = LXII
63 = LXIII
64 = LXIV
65 = LXV
66 = LXVI
67 = LXVII
68 = LXVIII
69 = LXIX
70 = LXX
71 = LXXI
72 = LXXII
73 = LXXIII
74 = LXXIV
75 = LXXV
76 = LXXVI
77 = LXXVII
78 = LXXVIII
79 = LXXIX
80 = LXXX
81 = LXXXI
82 = LXXXII
83 = LXXXIII
84 = LXXXIV
85 = LXXXV
86 = LXXXVI
87 = LXXXVII
88 = LXXXVIII
89 = LXXXIX
90 = XC
91 = XCI
92 = XCII
93 = XCIII
94 = XCIV
95 = XCV
96 = XCVI
97 = XCVII
98 = XCVIII
99 = XCIX
100 = C
Dernière mise à jour : Samedi, le 28 novembre 2015