diff --git a/TodoList/TodoList/main.m b/TodoList/TodoList/main.m
index 187be40..6c7c28f 100644
--- a/TodoList/TodoList/main.m
+++ b/TodoList/TodoList/main.m
@@ -3,15 +3,260 @@
 //  TodoList
 //
 //  Created by Michael Kavouras on 6/25/15.
+//  Homework by Xiulan 💁🏻 and Shena 🙋🏻 6/29/15.
 //  Copyright (c) 2015 Mike Kavouras. All rights reserved.
 //
 
 #import <Foundation/Foundation.h>
 
+// *** CLASS DECLERATIONS *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+@class ToDoItem; // 1st class manages list items
+@class ToDoList; // 2nd class manages individual lists
+@class ManageList; // 3rd class manages list commands
+
+// *** 1. TO DO ITEM *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+@interface ToDoItem : NSObject
+
+- (void)setItem:(NSString *)itemName;
+- (NSString *)itemName;
+- (void)addItemName;
+- (void)addPriority;
+- (BOOL)isDone;
+
+
+@end
+
+@implementation ToDoItem {
+    NSString *_itemName;
+    int _priority;
+    BOOL _isDone;
+}
+
+- (void)setItem:(NSString *)itemName {
+    _itemName = itemName;
+}
+- (NSString *)itemName {
+    return _itemName;
+}
+
+- (void)setPriority: (int)itemPriority {
+    _priority = itemPriority;
+}
+- (int)itemPriority {
+    return _priority;
+}
+
+- (void)setIsDone:(BOOL)isDone {
+    _isDone = isDone;
+}
+- (BOOL)isDone {
+    return _isDone;
+}
+
+- (void)addItemName {
+    NSLog(@"Enter item: ");
+    char name[256];
+    fgets(name, 256, stdin); // "fgets" allows the user to input an item with more than one word ie: "cat food"
+    NSString *item1 = [NSString stringWithUTF8String:name]; // we used "stringWithUTF8String" to convert char to string
+    item1 = [item1 stringByReplacingOccurrencesOfString:@"\n" withString:@""]; // this line eliminated the automatic linebreak that was caused by the stringWithUTF8 function
+    [self setItem: item1];
+}
+
+- (NSString *) description {
+    NSString* done = @"(not done)";
+    if (self.isDone) {
+        done = @"(done)";
+    }
+    return [[NSString alloc] initWithFormat:@"%@, priority %d %@", _itemName, _priority, done];
+}
+
+- (void)addPriority {  // we set the priority level for each inputted item
+    NSLog(@"New priority level 1-4:");
+    int inputPriority;
+    scanf("%d", &inputPriority);
+    [self setPriority: inputPriority];
+}
+
+@end
+
+// *** 2. TO DO LIST *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ** *** *** *** *** *** *** *** *** *** *** ***
+
+@interface ToDoList : NSObject
+
+-(NSMutableArray *)myListedItems;
+-(void)addItem:(ToDoItem *)newItem;
+-(void)setListName:(NSString *)listName;
+-(NSString *)listName;
+- (void)printAllListItems;
+
+@end
+
+@implementation ToDoList {
+    NSMutableArray *_myListedItems;
+    NSString *_listName;
+}
+
+-(NSMutableArray *)myListedItems {
+    if (_myListedItems == nil) {
+        _myListedItems = [[NSMutableArray alloc] init]; // initialize our list of items:
+    }
+    return _myListedItems;
+}
+
+-(void)addItem:(ToDoItem *)newItem {
+    [[self myListedItems] addObject:newItem];
+}
+
+- (void)printAllListItems {
+    NSLog(@"Your Current List Contains:");
+    for (int i = 0; i < [_myListedItems count]; i++) { // created a for loop to display each item in the list
+        NSLog(@"%d. %@", i+1, [_myListedItems objectAtIndex:i] );
+    }
+}
+
+- (void)createItems {
+    int choices, itemNo;
+    while (true) { // we started our while loop to add multiple items to the list
+        NSLog(@"Enter 1 to add an item.");
+        if ([_myListedItems count] != 0) { // when list is empty, we don't want all 5 options to be displayed
+            NSLog(@"Enter 2 to edit an item.");
+            NSLog(@"Enter 3 to delete an item.");
+            NSLog(@"Enter 4 to mark item as done.");
+        }
+        NSLog(@"Enter 0 to quit.");
+        scanf("%d", &choices);
+        fpurge(stdin); // "fpurge" stopped our code from displaying all at once
+        if (choices == 1) {  // added "if" condition to allow the user to stop or continue adding items to list
+            
+            ToDoItem *newItem = [[ToDoItem alloc] init]; // created a new Item object and set its item/priority. This addes our item to the memory
+            [newItem setPriority:1];
+            [newItem addItemName];
+            [self addItem:newItem]; // added the Item to `self`'s myListedItems array
+       
+        } else if (choices == 2) {
+            [self printAllListItems];
+            NSLog(@"Enter item number to edit/prioritize:");
+            scanf("%d", &itemNo);
+            fpurge(stdin);
+            ToDoItem *newItem = [_myListedItems objectAtIndex:itemNo-1];
+            [newItem addItemName];
+            [newItem addPriority];
+        } else if (choices == 3) {
+            [self printAllListItems];
+            NSLog(@"Enter item number to delete:");
+            scanf("%d", &itemNo);
+            [_myListedItems removeObjectAtIndex:itemNo-1];
+        } else if (choices == 4) {
+            [self printAllListItems];
+            NSLog(@"Enter item number to mark as done:");
+            scanf("%d", &itemNo);
+            fpurge(stdin); // this prevents the code from displaying all at once
+            ToDoItem *newItem = [_myListedItems objectAtIndex:itemNo-1];
+            [newItem setIsDone:YES];
+            
+            if([newItem isDone])
+                NSLog(@"%@ done", [newItem itemName]);
+            
+        } else if (choices == 0){
+            [self printAllListItems];
+            NSLog(@"End of list.\n");
+            break;
+        } else {
+            NSLog(@"Please enter 0 - 4"); // controls incorrect user input
+        }
+    }
+}
+
+-(void)setListName:(NSString *)listName {
+    _listName = listName;
+}
+-(NSString *)listName {
+    return _listName;
+}
+-(void)addListTitle {
+    NSLog(@"Please name your list:");
+    char name[256];
+    fgets(name, 256, stdin);
+    NSString *item2 = [NSString stringWithUTF8String:name]; // converted char to NSString with the "stringWithUTF8Stirng" function
+    item2 = [item2 stringByReplacingOccurrencesOfString:@"\n" withString:@""]; // this line corrects spacing issues
+    [self setListName: item2];
+    NSLog(@"Now, let's add items to %s list!", name);
+}
+
+@end
+
+// *** 3. MANAGE LIST *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ** *** *** *** *** *** *** *** *** *** *** ***
+
+@interface ManageList : NSObject
+
+-(NSMutableArray *)manageMyList;
+-(void)manageAddList:(ToDoList *)newList;
+-(void)managePrintList;
+
+@end
+
+@implementation ManageList {
+    NSMutableArray *_manageMyList;
+}
+
+-(NSMutableArray *)manageMyList {
+    if (_manageMyList == nil) {
+        _manageMyList = [[NSMutableArray alloc] init]; //initialize manageMylist
+    }
+    return _manageMyList;
+}
+
+-(void)manageAddList:(ToDoList *)newList {
+    [[self manageMyList] addObject:newList];
+}
+
+-(void)managePrintList {
+    for (int i = 0; i < [_manageMyList count]; i++) {
+        NSLog(@"Your %@ List:", [[_manageMyList objectAtIndex:i] listName]); // this displays list categories, add items too - loop again
+        ToDoList *list = [_manageMyList objectAtIndex:i];
+        for (int j=0; j< [list.myListedItems count]; j++) {
+            ToDoItem *item = [list.myListedItems objectAtIndex:j];
+            NSLog(@"%d. %@", j+1, item);
+        }
+    }
+}
+
+-(void)manageNewList {
+    int addList;
+    while (true) {
+        NSLog(@"Enter 1 to create a new list.");
+        NSLog(@"Enter 0 to quit.");
+        scanf("%d", &addList);
+        fpurge(stdin);
+       
+        if (addList == 1) {
+            ToDoList *newList = [[ToDoList alloc] init];
+            [newList addListTitle];
+            [newList createItems];
+            [newList listName];
+            [self manageAddList:newList];
+        
+        } else if (addList == 0) {
+            break;
+        } else {
+            NSLog(@"Please enter 0 or 1.");
+        }
+    }
+}
+@end
+
+// *** MAIN *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ** *** *** *** *** *** *** *** ***
+
 int main(int argc, const char * argv[]) {
     @autoreleasepool {
-        // insert code here...
-        NSLog(@"Hello, World!");
+        
+        ManageList *newList = [[ManageList alloc] init];
+        
+        [newList manageNewList];
+        [newList managePrintList];
+        
     }
     return 0;
 }