diff --git a/bytecodes/47.m b/bytecodes/47.m
new file mode 100644
index 0000000..b1f1d86
--- /dev/null
+++ b/bytecodes/47.m
@@ -0,0 +1,16 @@
+queue
+push 1
+push 2
+push 3
+pall
+stack
+push 4
+push 5
+push 6
+pall
+add
+pall
+queue
+push 11111
+add
+pall
diff --git a/functions.c b/functions.c
index a24d96b..e266a53 100644
--- a/functions.c
+++ b/functions.c
@@ -8,7 +8,7 @@
  */
 int add_node(stack_t **head, int value)
 {
-	stack_t *node;
+	stack_t *node, *temp;
 
 	if (!head)
 		return (-1);
@@ -21,36 +21,33 @@ int add_node(stack_t **head, int value)
 	}
 
 	node->n = value;
-	node->prev = NULL;
-	node->next = *head;
-	if (*head != NULL)
-		(*head)->prev = node;
-	*head = node;
 
-	return (1);
-}
-
-/**
- * delete_node - removes the top of the stack
- * @head: pointer to the head node
- * Return: 0 on success, -1 on failure
- */
-int delete_node(stack_t **head)
-{
-	stack_t *node;
-
-	if (!head)
-		return (-1);
-
-	if (*head == NULL)
-		return (0);
-
-	node = *head;
-	*head = (*head)->next;
-	(*head)->prev = NULL;
-	free(node);
+	if (mode == 0)
+	{
+		node->next = *head;
+		node->prev = NULL;
+		if (*head != NULL)
+			(*head)->prev = node;
+		*head = node;
+	}
+	else
+	{
+		temp = *head;
+		if (!temp)
+		{
+			node->prev = NULL;
+			node->next = NULL;
+			*head = node;
+			return (1);
+		}
+		while (temp->next)
+			temp = temp->next;
+		node->next = NULL;
+		node->prev = temp;
+		temp->next = node;
+	}
 
-	return (0);
+	return (1);
 }
 
 /**
diff --git a/get_operation.c b/get_operation.c
index 2601e27..f61b609 100644
--- a/get_operation.c
+++ b/get_operation.c
@@ -23,6 +23,8 @@ void (*get_op(char *name))(stack_t **, unsigned int)
 		{"pstr", pstr},
 		{"rotl", rotl},
 		{"rotr", rotr},
+		{"stack", stack},
+		{"queue", queue},
 		{NULL, NULL}
 	};
 
diff --git a/misc_operations.c b/misc_operations.c
index 4e95974..a18947e 100644
--- a/misc_operations.c
+++ b/misc_operations.c
@@ -57,6 +57,8 @@ void _mod(stack_t **stack, unsigned int line_number)
  */
 void pchar(stack_t **stack, unsigned int line_number)
 {
+	stack_t *node;
+
 	if (!stack || !*stack)
 	{
 		fprintf(stderr, "L%u: can't pchar, stack empty\n", line_number);
@@ -69,7 +71,8 @@ void pchar(stack_t **stack, unsigned int line_number)
 		exit(EXIT_FAILURE);
 	}
 
-	printf("%c\n", (*stack)->n);
+	node = *stack;
+	printf("%c\n", node->n);
 }
 
 /**
diff --git a/monty b/monty
index ab58d7c..018e7e3 100755
Binary files a/monty and b/monty differ
diff --git a/monty.h b/monty.h
index a4b62c2..6d9c539 100644
--- a/monty.h
+++ b/monty.h
@@ -11,6 +11,7 @@
 #include <unistd.h>
 #include <string.h>
 
+extern int mode;
 /**
  * struct stack_s - doubly linked list representation of a stack (or queue)
  * @n: integer
@@ -54,7 +55,7 @@ void pint(stack_t **stack, unsigned int line_number);
 void pop(stack_t **stack, unsigned int line_number);
 void swap(stack_t **stack, unsigned int line_number);
 void _add(stack_t **stack, unsigned int line_number);
-void nop(stack_t **stack, unsigned int line_number);
+void nop(stack_t **stack __attribute__((unused)), unsigned int line_number __attribute__((unused)));
 void _sub(stack_t **stack, unsigned int line_number);
 void _div(stack_t **stack, unsigned int line_number);
 void _mul(stack_t **stack, unsigned int line_number);
@@ -63,6 +64,8 @@ void pchar(stack_t **stack, unsigned int line_number);
 void pstr(stack_t **stack, unsigned int line_number);
 void rotl(stack_t **stack, unsigned int line_number);
 void rotr(stack_t **stack, unsigned int line_number);
+void stack(stack_t **stack __attribute__((unused)), unsigned int line_number __attribute__((unused)));
+void queue(stack_t **stack __attribute__((unused)), unsigned int line_number __attribute__((unused)));
 
 /* Miscellaneous */
 void (*get_op(char *name))(stack_t **stack, unsigned int line_number);
diff --git a/more_operations.c b/more_operations.c
index 7c8b593..a0b03a4 100644
--- a/more_operations.c
+++ b/more_operations.c
@@ -50,14 +50,9 @@ void _add(stack_t **stack, unsigned int line_number)
  * @stack: stack
  * @line_number: line number
  */
-void nop(stack_t **stack, unsigned int line_number)
+void nop(stack_t **stack __attribute__((unused)), unsigned int line_number __attribute__((unused)))
 {
-	int i = 0;
-	stack_t *node = *stack;
-
-	(void) line_number;
-	if (i == 1)
-		printf("%d\n", node->n);
+	return;
 }
 
 /**
diff --git a/operations.c b/operations.c
index c28495c..35d1717 100644
--- a/operations.c
+++ b/operations.c
@@ -59,6 +59,7 @@ void pall(stack_t **stack, unsigned int line_number)
 
 	(void) line_number;
 	node = *stack;
+
 	while (node)
 	{
 		printf("%d\n", node->n);
@@ -98,6 +99,7 @@ void pop(stack_t **stack, unsigned int line_number)
 	}
 
 	node = *stack;
+
 	*stack = (*stack)->next;
 	free(node);
 }
diff --git a/rotate.c b/rotate.c
index 547bed1..354f879 100644
--- a/rotate.c
+++ b/rotate.c
@@ -1,5 +1,7 @@
 #include "monty.h"
 
+int mode = 0;
+
 /**
  * rotl - rotates the stack
  * @stack: pointer to stack
@@ -39,7 +41,6 @@ void rotr(stack_t **stack, unsigned int line_number)
 
 	(void) line_number;
 	temp = *stack;
-
 	while (temp->next)
 		temp = temp->next;
 	temp->prev->next = NULL;
@@ -47,3 +48,23 @@ void rotr(stack_t **stack, unsigned int line_number)
 	temp->prev = NULL;
 	*stack = temp;
 }
+
+/**
+ * stack - sets mode to stack
+ * @stack: pointer to stack
+ * @line_number: line number
+ */
+void stack(stack_t **stack __attribute__((unused)), unsigned int line_number __attribute__((unused)))
+{
+	mode = 0;
+}
+
+/**
+ * queue - sets mode to stack
+ * @stack: pointer to stack
+ * @line_number: line number
+ */
+void queue(stack_t **stack __attribute__((unused)), unsigned int line_number __attribute__((unused)))
+{
+	mode = 1;
+}