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opcode_functions.c
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opcode_functions.c
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#include "monty.h"
/**
* push - push a new element in the stack
* @stack: stack
* @line_number: line number or the command
*/
void push(stack_t **stack, unsigned int line_number)
{
int i = 0;
global->ln = line_number;
global->stack = *stack;
if (global->arr[1] == NULL)
exit(error_msg(4));
for (; global->arr[1][i] != '\0'; i++)
{
if ((isdigit(global->arr[1][i]) == 0) && global->arr[1][0] != '-')
exit(error_msg(4));
}
if (global->status == 0)
add_node_stack();
else
add_node_queue();
}
/**
* pall - print the elements in a stack
* @stack: stack
* @line_number: line number or the command
*/
void pall(stack_t **stack, unsigned int line_number)
{
stack_t *aux_stack = *stack;
global->ln = line_number;
while (aux_stack != NULL)
{
printf("%d\n", aux_stack->n);
aux_stack = aux_stack->next;
}
}
/**
* pint - get the value of the top of the stack
* @stack: stack
* @line_number: line number or the command
*/
void pint(stack_t **stack, unsigned int line_number)
{
global->ln = line_number;
global->stack = *stack;
if ((*stack) == NULL)
exit(error_msg(5));
printf("%d\n", (*stack)->n);
}
/**
* pop - delete the top of the stack
* @stack: stack
* @line_number: line number or the command
*/
void pop(stack_t **stack, unsigned int line_number)
{
stack_t *top_element;
global->ln = line_number;
if (!(*stack))
exit(error_msg(6));
top_element = *stack;
*stack = (*stack)->next;
if (*stack)
(*stack)->prev = NULL;
free(top_element);
}
/**
* swap - interchange the values of the first two elements in a stack
* @stack: stack
* @line_number: line number or the command
*/
void swap(stack_t **stack, unsigned int line_number)
{
int num;
global->ln = line_number;
global->stack = *stack;
if (!(*stack) || !((*stack)->next))
exit(error_msg(7));
num = (*stack)->n;
(*stack)->n = (*stack)->next->n;
(*stack)->next->n = num;
}