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advanced_ops.c
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advanced_ops.c
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#include "monty.h"
/**
* pchar - prints the first number in a stack as ASCII character
* @structstack: address of the first node
* @lineno: line number
*
* Return: nothing
*/
void pchar(stack_t **structstack, unsigned int lineno)
{
stack_t *temp = *structstack;
if (!temp)
{
fprintf(stderr, "L%u: can't pchar, stack empty\n", lineno);
exit(EXIT_FAILURE);
}
if (temp->n < 0 || temp->n > 127)
{
fprintf(stderr, "L%u: can't pchar, value out of range\n", lineno);
exit(EXIT_FAILURE);
}
if (temp->n >= 32)
printf("%c\n", temp->n);
}
/**
* pstr - prints all numbers in stack as ASCII characters
* @structstack: address of the first node
* @lineno: line number
*
* Return: nothing
*/
void pstr(stack_t **structstack, unsigned int lineno)
{
stack_t *temp = *structstack;
(void) lineno;
while (temp)
{
if (temp->n <= 0 || temp->n > 127)
break;
if (temp->n >= 32)
printf("%c", temp->n);
temp = temp->next;
}
printf("\n");
}
/**
* rotl - moves top stack element to to the bottom
* @structstack: address of the first node
* @lineno: line number
*
* Return: nothing
*/
void rotl(stack_t **structstack, unsigned int lineno)
{
stack_t *top = *structstack, *temp = *structstack;
(void) lineno;
while (temp)
{
if (!temp->next)
{
temp->next = top;
top->prev = temp;
*structstack = top->next;
top->next = NULL;
(*structstack)->prev = NULL;
break;
}
temp = temp->next;
}
}
/**
* rotr - moves bottom stack element to the top
* @structstack: address of the first node
* @lineno: line number
*
* Return: nothing
*/
void rotr(stack_t **structstack, unsigned int lineno)
{
stack_t *top = *structstack, *temp = *structstack;
(void) lineno;
while (temp)
{
if (!temp->next)
{
temp->next = top;
top->prev = temp;
temp->prev->next = NULL;
temp->prev = NULL;
*structstack = temp;
break;
}
temp = temp->next;
}
}