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Pilha, Estrutura de dados.

Publicado por Matheus (X-warrior) Bratfisch em abril 2, 2009

Boa Noite,

Hoje vou ensinar um conceito bem básico de estrutura de dados, que vimos a algumas aulas atrás. PILHA, é uma estrutura de dados abstratos amplamente utilizada na informatica e é baseada no principio LIFO (Last in, first out), ou seja ultimo a entrar, primeiro a sair. Ela possue 2 funções que todas devem possuir, push (adicionar) e pop (remover), outros metodos que podem existir, podem ser considerados como privados, pois só mechem na estrutura interna da pilha.

O enunciado do exercicio que tivemos que resolver foi o seguinte:

* Implemente todas as operações vistas sobre pilha;
* implemente um programa principal que utilize a pilha através de um menu com os seguintes itens: empilhar, desempilhar, limpar, mostrar pilha, sair do programa. Use a estrutura de programação switch do “C” para isto;
* ao mostrar a pilha, o programa deve colocar embaixo de cada dado, a sua posição no vetor. Utilize as opções de definição de tamanho de campo de impressão do printf() para isto;
* a pilha possuirá tamanho máximo 30, definido como uma constante chamada MAXPILHA. Utilize esta constante para a definição da estrutura de dados que será a pilha;
* a pilha será referenciada por uma variável global.

Aqui está a primeira implementação que fizemos.

Abraços,
Matheus

PS: Com o tempo vou postar reformulações desse exercicio e os novos codigos desenvolvidos.

Publicado emCEstrutura de Dados

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