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53 lines
641 B
53 lines
641 B
/*
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* ptr_stack.c
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*
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* Created on: Jun 9, 2013
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* Author: delmadord
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*/
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#include <stdbool.h>
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#define STACK_SIZE 100
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int *top_ptr;
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int contents[STACK_SIZE];
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void push(int i);
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int pop(void);
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void make_empty(void);
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bool is_empty(void);
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bool is_full(void);
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int main(void) {
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return 0;
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}
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void push(int i) {
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if (is_full())
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stack_overflow();
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else
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*top_ptr++ = i;
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}
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int pop(void) {
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if (is_empty())
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stack_underflow();
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else
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return *--top_ptr;
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}
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void make_empty(void) {
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top_ptr = &contents[0];
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}
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bool is_empty(void) {
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return top_ptr = &contents[0];
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}
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bool is_full(void) {
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return top_ptr == &contents[STACK_SIZE];
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}
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