Cola (Queues), archivo cabecera

#ifndef COLA_H_INCLUDED #define COLA_H_INCLUDED #include <stdio.H> #include <conio.h> #include <stdlib.h> typedef char letra; typedef struct Nodo{ letra elem; Nodo *sig; }; typedef Nodo* apt; struct cola{ apt frente,final; }c; typedef Nodo *posicion; typedef int logico; void inicializa(apt *C) { *C=new(Nodo); (*C)->sig=NULL; c.frente=NULL;; } void inserta(letra x, apt C){ posicion aux,aux2; aux=new Nodo; aux->elem=x; aux->sig=NULL; aux2=C; while(aux2->sig!=NULL) aux2=aux2->sig; aux2->sig =aux;; if(c.frente==NULL) c.frente=aux; } logico vacia(apt C){ if (C->sig==NULL) return 1; else return 0; } void suprimir(apt C){ posicion aux; if (vacia(C)) printf("Cola Vacia"); else{ aux=C->sig->sig; delete(C->sig); C->sig=aux; c.frente=aux; if(c.frente==NULL); } } letra Frente(){ return (c.frente->elem); } letra Final(){ return (>elem); } void imprime(apt C){ posicion aux; if (vacia(C)) printf("N/A"); else { aux=C->sig; while(aux!=NULL){ printf("%c ",aux->elem); aux=aux->sig; } } } void Anula(apt C){ while(C->sig!=NULL) suprimir(C); } #endif // COLA_H_INCLUDED

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