39 lines
768 B
C++
39 lines
768 B
C++
#include "stack.h"
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#include <stdlib.h>
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void stack_init(t_stack& stack, const int size) {
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if (stack.data != nullptr) free(stack.data);
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stack.data = (unsigned char*)malloc(size);
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stack.max = size;
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stack.top = -1;
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}
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const bool stack_isempty(t_stack& stack) {
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return stack.top == -1;
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}
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const bool stack_isfull(t_stack& stack) {
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return stack.top == stack.max;
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}
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void stack_push(t_stack& stack, const char value) {
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if (!stack_isfull(stack)) {
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stack.data[++stack.top] = value;
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}
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}
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const char stack_pop(t_stack& stack) {
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if (!stack_isempty(stack)) {
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return stack.data[stack.top--];
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}
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}
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const char stack_peek(t_stack& stack) {
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return stack.data[stack.top];
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}
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void stack_delete(t_stack& stack) {
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free(stack.data);
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}
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