Commit | Line | Data |
---|---|---|
bd8b2f2e | 1 | #include <stdio.h> |
e6c85893 | 2 | #include <stdbool.h> |
bd8b2f2e JB |
3 | |
4 | //FIXME: Comment the code !!! | |
5 | ||
6 | void displayMenuEntry(int num, const char* option) { | |
7 | printf("%d - %s\n", num, option); | |
8 | } | |
9 | ||
10 | void displayMenu() { | |
11 | displayMenuEntry(1, "Addition"); | |
12 | displayMenuEntry(2, "Soustraction"); | |
13 | displayMenuEntry(3, "Multiplication"); | |
14 | displayMenuEntry(4, "Division"); | |
15 | displayMenuEntry(5, "Puissance"); | |
16 | displayMenuEntry(6, "Quitter"); | |
17 | } | |
18 | ||
19 | int promptValue(const char* invite) { | |
20 | int value = 0; | |
21 | puts(invite); | |
22 | scanf("%d", &value); | |
23 | return value; | |
24 | } | |
25 | ||
26 | int promptOperation() { | |
27 | displayMenu(); | |
e6c85893 | 28 | return promptValue("Veuillez choisir une operation ?"); |
bd8b2f2e JB |
29 | } |
30 | ||
31 | int doAddition(int val1, int val2) { | |
32 | return val1 + val2; | |
33 | } | |
34 | ||
35 | int doSubstraction(int val1, int val2) { | |
36 | return val1 - val2; | |
37 | } | |
38 | ||
39 | int doMultiplication(int val1, int val2) { | |
40 | return val1 * val2; | |
41 | } | |
42 | ||
43 | int doDivision(int val1, int val2) { | |
e6c85893 | 44 | //FIXME: Useless code path given the exit main loop condition |
bd8b2f2e JB |
45 | if (val2 == 0) { |
46 | printf("Division par zero !\n"); | |
47 | // FIXME: I'm not very fond of this convention ... | |
48 | return 0; | |
49 | } else { | |
50 | return val1 / val2; | |
51 | } | |
52 | } | |
53 | ||
54 | int doPuissance(int base, int expo) { | |
55 | int power; | |
56 | if ( expo == 1) { | |
57 | power = base; | |
58 | } else if ( expo % 2 == 0 ) { | |
59 | power = doPuissance(base*base, expo/2); | |
60 | } else { | |
61 | power = base*doPuissance(base*base,(expo-1)/2); | |
62 | } | |
63 | return power; | |
64 | } | |
65 | ||
e6c85893 JB |
66 | int doOperation(int selection, int val1, int val2) { |
67 | int op_result; | |
68 | switch (selection) { | |
69 | case 1: | |
70 | op_result = doAddition(val1, val2); | |
71 | break; | |
72 | case 2: | |
73 | op_result = doSubstraction(val1, val2); | |
74 | break; | |
75 | case 3: | |
76 | op_result = doMultiplication(val1, val2); | |
77 | break; | |
78 | case 4: | |
79 | op_result = doDivision(val1, val2); | |
80 | break; | |
81 | case 5: | |
82 | op_result = doPuissance(val1, val2); | |
83 | break; | |
84 | case 6: | |
85 | break; | |
86 | default: | |
87 | puts("Faire un choix compris entre 1 et 6"); | |
88 | } | |
89 | return op_result; | |
90 | } | |
91 | ||
bd8b2f2e JB |
92 | int main() { |
93 | int choice = promptOperation(); | |
e6c85893 JB |
94 | int value1 = promptValue("Veuillez saisir une valeur entiere initiale ?"); |
95 | int value2 = 0, result = 0; | |
96 | bool first_loop = true; | |
97 | ||
98 | for (;;) { | |
99 | if (choice == 6) break; | |
100 | if (first_loop) { | |
61ce0eeb | 101 | value2 = promptValue("Veuillez saisir une valeur entiere avec laquelle l'operation sera effectuee ?"); |
e6c85893 JB |
102 | if (value2 == 0) break; |
103 | result = doOperation(choice, value1, value2); | |
104 | first_loop = false; | |
105 | } else { | |
61ce0eeb | 106 | value2 = promptValue("Veuillez saisir la prochaine valeur entiere avec laquelle l'operation sera effectuee sur l'ancien resultat ?"); |
e6c85893 JB |
107 | if (value2 == 0) break; |
108 | result = doOperation(choice, result, value2); | |
109 | } | |
110 | printf("Le resultat de l'operation choisie est %d\n\n", result); | |
111 | } | |
bd8b2f2e JB |
112 | |
113 | return 0; | |
114 | } |