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s6-pa-tp/TP5/questions.c
Geoffrey Frogeye 46b1ecc22c TP5 + 1/2 questions supplémentaires
Intersection ne fonctionne pas encore
2017-03-15 12:10:20 +01:00

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#include<stdlib.h>
#include<stdio.h>
#include<stdbool.h>
// 2.2.1
struct Cellule {
struct Cellule* suiv;
int val;
int mult;
};
typedef struct Cellule Cellule;
void ajout_tete(Cellule** l, int val, int mult) {
Cellule* p;
p = malloc(sizeof(Cellule));
p->val = val;
p->suiv = *l;
p->mult = mult;
*l = p;
}
void imprimer(Cellule* l) {
while (l != NULL) {
printf("%d × %d\n", l->val, l->mult);
l = l->suiv;
}
}
void supprimer_tete(Cellule** l) {
Cellule* p;
p = (*l)->suiv;
free(*l);
*l = p;
}
// 2.2.2
void inserer(Cellule** p, int val) {
Cellule* l = *p;
if (l == NULL) {
ajout_tete(p, val, 1);
} else if (l->val == val) {
l->mult++;
} else if (l->val > val) {
ajout_tete(p, val, 1);
} else {
inserer(&l->suiv, val);
}
}
// 2.2.3
Cellule* lire_fichier(FILE* fp) {
Cellule* l = NULL;
int val;
while (fscanf(fp, "%d", &val) != EOF) {
inserer(&l, val);
}
return l;
}
// 2.3.1
bool est_trie(Cellule* l) {
if (l == NULL || l->suiv == NULL) {
return true;
}
if (l->val < l->suiv->val) {
return est_trie(l->suiv);
} else {
return false;
}
}
// 2.3.2
void desallouer(Cellule* l) {
if (l == NULL) {
return;
}
desallouer(l->suiv);
free(l);
}
// 2.3.3
int multiplicite(Cellule* l, int val) {
if (l == NULL) {
return 0;
}
if (l->val == val) {
return l->mult;
} else {
return multiplicite(l->suiv, val);
}
}
// 2.3.3
int cardinal(Cellule* l) {
if (l == NULL) {
return 0;
}
return l->mult + cardinal(l->suiv);
}
int main(int argc, char* argv[]) {
if (argc != 2) {
printf("Usage : %s FICHIER_ENTREE\n", argv[0]);
return EXIT_FAILURE;
}
FILE* fp;
fp = fopen(argv[1], "r");
if (fp == NULL) {
printf("Impossible d'ouvrir le fichier %s.\n", argv[1]);
return EXIT_FAILURE;
}
Cellule* l = lire_fichier(fp);
fclose(fp);
imprimer(l);
printf("l est trié : %d\n", est_trie(l));
printf("multiplicité de 3 : %d\n", multiplicite(l, 3));
printf("cardinal de l : %d\n", cardinal(l));
desallouer(l);
}