37 lines
623 B
C
37 lines
623 B
C
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#include <stdio.h>
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#include <stdlib.h>
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typedef char* pile;
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void push(pile* p, char c) {
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p = (pile*)realloc(p, sizeof(*p) + sizeof(char));
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(*p)[(sizeof(*p)/sizeof(char))-1] = c;
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}
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char pop(pile* p) {
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char c = (*p)[(sizeof(*p)/sizeof(char))-1];
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p = realloc(p, sizeof(*p) - sizeof(char));
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return c;
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}
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int empty(pile p) {
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return p[0] == 0;
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}
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char top(pile p) {
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return p[(sizeof(p)/sizeof(char))-1];
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}
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void clear(pile* p) {
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p = realloc(p, sizeof(char));
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(*p)[0] = 0;
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}
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pile create() {
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pile p = (pile)calloc(1, sizeof(char));
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return p;
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}
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pile destroy(pile* p) {
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free(p);
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}
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