monty1.c

#include "monty.h"

/**
 * add - Adds the top two elements of the stack.
 * @stack: pointer to head of stack
 * @line_num: file's line number
 * Return: Void
 */
void add(stack_t **stack, unsigned int line_num)
{
	stack_t *h = *stack, *n;

	if ((*stack) == NULL || (*stack)->next == NULL)
	{
		fprintf(stderr, "L%u: can't add, stack too short\n", line_num);
		exit(EXIT_FAILURE);
	}

	if (*stack && (*stack)->next)
	{
		n = h->next;
		n->n += h->n;
		free(h);
		*stack = n;
	}
}

/**
 * pint - Prints value at top of stack.
 * @stack: pointer to head of stack
 * @line_num: file's line number
 * Return: Void
 */
void pint(stack_t **stack, unsigned int line_num)
{
	if (*stack == NULL)
	{
		fprintf(stderr, "L%u: can't pint, stack empty\n", line_num);
		exit(EXIT_FAILURE);
	}

	printf("%d\n", (*stack)->n);

}