Unknown Type Name 'studentController' - objective-c

Question

I am making a table view application and it will not recognize the type studentController in the studentAddController.h. I have a previous project that I looked at and cannot figure out why it can not recognize the type name.
Here is the code in the studentController.h
#import <UIKit/UIKit.h>
#import "studentCells.h"
#import "AssignmentsController.h"
#import "studentAddController.h"
#interface studentController : UITableViewController {
NSMutableArray *studentArray;
}
- (IBAction)addStudentButton:(id)sender;
- (void)insertNewRow:(NSDictionary *)studentDictionary;
#property (nonatomic, retain) UITableView *studentTableView;
#end
Here is the code in the studentController.m
#import "studentController.h"
#implementation studentController
-(id)initWithStyle:(UITableViewStyle)style {
self =[super initWithStyle:style];
if (self) {
}
return self;
}
-(void)viewDidLoad {
[super viewDidLoad];
studentArray = [[NSMutableArray alloc] initWithObjects: nil];
}
- (IBAction)addStudentButton:(id)sender {
studentAddController *studentAddView =[self.storyboard instantiateViewControllerWithIdentifier:#"studentAddView"];
[self.navigationController pushViewController:studentAddView animated:YES];
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [studentArray count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *studentCellIdentifier = #"studentCell";
studentCells *cell = [tableView dequeueReusableCellWithIdentifier:studentCellIdentifier forIndexPath:indexPath];
NSDictionary *studentDictionary = [studentArray objectAtIndex:[indexPath row]];
[cell.firstNameCellLabel setText:[studentDictionary objectForKey:#"First Name"]];
[cell.lastNameCellLabel setText:[studentDictionary objectForKey:#"Last Name"]];
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
AssignmentsController *assignmentView = [self.storyboard instantiateViewControllerWithIdentifier:#"assignmentView"];
[self.navigationController pushViewController:assignmentView animated:YES];
}
-(void)insertNewRow:(NSDictionary *)studentDictionary {
[studentArray addObject:studentDictionary];
[self.tableView beginUpdates];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:[studentArray count] -1 inSection:0];
[self.tableView insertRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationLeft];
[self.tableView endUpdates];
}
#end
Here is the code for studentAddController.h
#import <UIKit/UIKit.h>
#import "studentController.h"
#import "studentAddController.h"
#interface studentAddController : UIViewController
#property (weak, nonatomic) IBOutlet UITextField *firstNameField;
#property (weak, nonatomic) IBOutlet UITextField *lastNameField;
- (IBAction)doneButton:(id)sender;
- (IBAction)keyboardResign:(id)sender;
#property (nonatomic, strong) studentController *parentTableVC;
#end
Here is the code in the studentAddController.m
#import "studentAddController.h"
#implementation studentAddController
- (IBAction)doneButton:(id)sender {
NSDictionary *studentDictionary =#{ #"First Name" : [self.firstNameField text],
#"Last Name" : [self.lastNameField text]
};
[self.parentTableVC insertNewRow:studentDictionary];
[self.navigationController popViewControllerAnimated:YES];
}
- (IBAction)keyboardResign:(id)sender {
[self resignFirstResponder];
}
#end

Answer 1

You have a circular reference. In studentController.h you import studentAddController.h and in studentAddController.h you import studentController.h. Try making these changes to your headers:
studentController.h
#import <UIKit/UIKit.h>
#import "studentCells.h"
#import "AssignmentsController.h"
studentController.m
#import "studentController.h"
#import "studentAddController.h"
studentAddController.h
#import <UIKit/UIKit.h>
#import "studentController.h"
I would also note that naming standards would dictate your classes are PascalCase not camelCase. Only your variables and methods should be camelCase.
I would also note that you didn't need to import studentAddController in studentController.h so I just moved it to the .m. If you actually needed to import studentAddController then you would do a forward class declaration to avoid a circular reference. Like this:
#import <UIKit/UIKit.h>
#import "studentCells.h"
#import "AssignmentsController.h"
#class studentAddController;