Olá pessoal, estou tendo problemas ao implementar uma fila de prioridade, o usuario entra com o numero de prioridades, depois com as pessoas em um arquivo csv. o programa deve executar certas funcoes, mas estou tendo problemas na inserção, as filas do vetor de prioridades está sempre NULL, alguém poderia me ajudar a consertar isso? #include <stdlib.h>
#include <stdio.h>
#include <string.h>
typedef struct person {
long long int cpf;
char name[100];
char gender;
int priority;
} person;
typedef struct list {
person * info;
struct list * next;
} list;
typedef struct command {
char command;
int parameter;
} command;
int read_command(command * c) {
char buffer[10];
int ret;
ret = scanf("%c", &(c->command));
if (ret == EOF) {
return 1;
}
c->parameter = -1;
if (c->command == 'C' || c->command == 'I') {
scanf("%d", &(c->parameter));
}
gets(buffer);
return 0;
}
person * read_person() {
char buffer[512];
person * p = malloc(sizeof(person));
gets(buffer);
sscanf(buffer, "%lld,%[^,],%c,%d,", &(p->cpf), p->name, &(p->gender), &(p->priority));
return p;
}
void insert_element(list ** queue, int how_many) {
int i;
list *aux;
for(i = 0; i < how_many; i++) {
person * p;
p = read_person();
list * newp =(list*) malloc(sizeof(list ));
newp->info = p;
newp->next = NULL;
aux = queue[p->priority];
if(queue[p->priority]==NULL){
aux = newp;
}else{
while(aux->next!=NULL)
aux=aux->next;
aux->next = newp;
}
}
}
void remove_element(list *queue, int position){
list *p = queue;
printf("%lld, %s, %c,\n", p->info->cpf, p->info->name, p->info->gender);
queue = p->next;
free(p);
}
void remove_next(list ** queue, int max_priority) {
list *p = queue[max_priority];
int j = max_priority;
while(p==NULL && j>0){
j--;
p = queue[j];
}
if(p!=NULL)
remove_element(p, j);
}
void print_queue(list **queue, int size){
int i;
list *aux;
for(i=size; i>=0; i--){
aux = queue[i];
printf("[%d]\n", i);
while(aux!=NULL){
printf("%lld, %s, %c,\n", aux->info->cpf, aux->info->name, aux->info->gender);
aux = aux->next;
}
}
printf("\n");
}
void cleanup(list **queue, int size){
int i;
list *aux;
for(i=size; i>=0; i--){
aux=queue[i];
while(aux!=NULL){
list *t = aux->next;
free(aux);
aux = t;
}
}
}
void execute_command(command c, list ** queue, int max_priority) {
switch (c.command) {
case 'C' :
cleanup(queue, max_priority);
case 'I' :
insert_element(queue, c.parameter);
break;
case 'P' :
print_queue(queue, max_priority);
break;
case 'R' :
remove_next(queue, max_priority);
}
}
int main() {
list ** queue;
int file_end = 0;
int queue_size, i;
char buffer[10];
scanf("%d", &queue_size);
gets(buffer);
queue = (list**)malloc((queue_size+1)*sizeof(list*));
for(i=0; i<=queue_size; i++){
queue[i]=(list*)malloc(sizeof(list));
queue[i]=NULL;
}
while (! file_end) {
command c;
file_end = read_command(&c);
if(! file_end) {
execute_command(c, queue, queue_size);
}
}
cleanup(queue, queue_size);
free(queue);
}
