49 lines
960 B
C
49 lines
960 B
C
#include "pileInt.h"
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#include <stdlib.h>
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#include <stdio.h>
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void initPileI( struct PileInt* p ) {
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p->height = 0;
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p->l = NULL;
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}
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void pushPileI( struct PileInt* p, programPointer i ) {
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struct ListInt* aux = p->l;
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p->l = (struct ListInt*)malloc(sizeof(struct ListInt));
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if (p->l == NULL) {
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fprintf(stderr, "Error: Could not allocate memory for the next cell on the stack");
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return;
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}
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p->l->next = aux;
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p->l->i = i;
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++(p->height);
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}
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int topPileI( struct PileInt* p ) {
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if ( p->height == 0 ) {
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fprintf(stderr, "Error: The stack has no element, cannot find top");
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exit(1);
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}
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return p->l->i;
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}
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void popPileI( struct PileInt* p ) {
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struct ListInt* aux;
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if ( p->height != 0 ) {
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--(p->height);
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aux = p->l;
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p->l = p->l->next;
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free(aux);
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}
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}
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void endPileI( struct PileInt* p ) {
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while (p->height != 0) {
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popPileI(p);
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}
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}
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