src/stack.c


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/*
 * Copyright (C) 2025  Johnny Richard <johnny@johnnyrichard.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
#include "stack.h"
#include <stdio.h>

void
stack_push(stack_t* stack, int value)
{
    if (stack->size >= stack->capacity) {
        perror("stack overflow");
        exit(EXIT_FAILURE);
    }
    stack->data[stack->size++] = value;
}

int
stack_pop(stack_t* stack)
{
    if (stack->size <= 0) {
        perror("stack_pop: Stack already empty");
        exit(EXIT_FAILURE);
    }
    return stack->data[--stack->size];
}