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operations.c
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operations.c
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#include "monty.h"
int number;
/**
* push_stack - add node to stack
* @top: top of stack
* @line_number: constant int value in the structure
*/
void push_stack(stack_t **top, __attribute__((unused))unsigned int line_number)
{
stack_t *tmp;
tmp = malloc(sizeof(stack_t));
if (tmp == NULL)
malloc_error();
tmp->n = number;
tmp->prev = NULL;
if (isEmpty(*top))
{
tmp->next = NULL;
*top = tmp;
}
else
{
tmp->next = *top;
(*top)->prev = tmp;
*top = tmp;
}
}
/**
* pall_stack - prints the stack
* @top: top of stack
* @line_number: constant int value in the structure
*/
void pall_stack(stack_t **top, __attribute__((unused))unsigned int line_number)
{
stack_t *tmp = *top;
while (tmp)
{
printf("%d\n", tmp->n);
tmp = tmp->next;
}
}
/**
* free_stack - free the stack
* @top: top of stack
*/
void free_stack(stack_t *top)
{
stack_t *tmp;
if (!top)
return;
while (top)
{
tmp = top;
top = tmp->next;
free(tmp);
}
free(top);
}
/**
* pint_stack - Function that print the valueat top of stack
* @top: element at the top of the stack (head)
* @line_number: constant int value in the structure
*/
void pint_stack(stack_t **top, unsigned int line_number)
{
stack_t *tmp = *top;
if (tmp)
printf("%d\n", tmp->n);
else
pint_error(line_number);
}
/**
* pop_stack - Function that pop (delete) the value at top of stack
* @top: element at the top of the stack (head)
* @line_number: constant int value in the structure
*/
void pop_stack(stack_t **top, unsigned int line_number)
{
stack_t *tmp = *top;
if (!*top)
pop_error(line_number);
*top = (*top)->next;
free(tmp);
tmp = NULL;
}