1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
#include <assert.h>
#define ADU 22.7
#define KID 10.75
#define FAMILLY 57.8
#define MAX_ADU_FAMILLY 2
#define MAX_KID_FAMILLY 3
#define COMPARE_FLOAT_PRECISION 0.00001
float prixEntree(int adus, int kids){
int max_familly = 0;
int r_adus = adus;
int r_kids = kids;
do {
r_adus -= MAX_ADU_FAMILLY;
r_kids -= MAX_KID_FAMILLY;
max_familly++;
} while (r_adus > 0 || r_kids > 0);
float min = -1;
for (int f = 0; f <= max_familly; f++){
int r_adus = adus - MAX_ADU_FAMILLY*f;
int r_kids = kids - MAX_KID_FAMILLY*f;
float t = f*FAMILLY;
if (r_adus > 0) t += r_adus * ADU;
if (r_kids > 0) t += r_kids * KID;
if (min == -1 || t < min) {
min = t;
}
}
return min;
}
int compareFloat(float f1, float f2, float eps){
/* Prend trois floats (f1, f2 et eps) et renvoie |f1-f2|<eps ; est une comparaison de deux
* floats à epsilon près */
float diff = f1 - f2;
if (diff < 0) diff = - diff;
return diff < eps;
}
int main(){
assert(compareFloat(prixEntree(2, 3), FAMILLY, COMPARE_FLOAT_PRECISION));
assert(compareFloat(prixEntree(2, 2), FAMILLY, COMPARE_FLOAT_PRECISION));
assert(compareFloat(prixEntree(2, 1), 2*ADU + KID, COMPARE_FLOAT_PRECISION));
assert(compareFloat(prixEntree(6, 3), 4*ADU + FAMILLY, COMPARE_FLOAT_PRECISION));
assert(compareFloat(prixEntree(1, 3), 1*ADU + 3*KID, COMPARE_FLOAT_PRECISION));
assert(compareFloat(prixEntree(5, 7), 2*FAMILLY + ADU + KID, COMPARE_FLOAT_PRECISION));
assert(compareFloat(prixEntree(6, 8), 3*FAMILLY, COMPARE_FLOAT_PRECISION));
assert(compareFloat(prixEntree(10, 0), 227, COMPARE_FLOAT_PRECISION));
assert(compareFloat(prixEntree(0, 4), 43, COMPARE_FLOAT_PRECISION));
return 0;
}
|
