Thread: Xcode help- incomplete implementation.

im supposed to be creating two objects in xcode and i cant for the life of me find where my aCar is incomplete implementation.

Code:

//
//  aCar.m
//  carObject
//
//  Created by Nicholas Smith on 9/26/12.
//  Copyright (c) 2012 Nicholas Smith. All rights reserved.
//


#import "aCar.h"


@implementation aCar




-(void) setColor:(NSString *)aColor
{
    color=aColor;
}
-(NSString *) color
{
    return color;
}


-(void) setModel:(NSString *)aModel
{
    model=aModel;
}
-(NSString *) model
{
    return model;
}




-(void) setYear:(NSString *)aYear
{
    year=aYear;
}
-(NSString *) year
{
    return year;
}




-(void) setYearsOwned:(int)aYearsOwned
{
    yearsOwned=aYearsOwned;
}
-(int) yearsOwned
{
returnyearsOwned;
}






-(void) setNumOfOwners:(int)aNumOfOwners
{
    numOfOwners=aNumOfOwners;
}
-(int) numOfOwners
{
returnnumOfOwners;
}






@end


//
//  aCar.h
//  carObject
//
//  Created by Nicholas Smith on 9/26/12.
//  Copyright (c) 2012 Nicholas Smith. All rights reserved.
//

//acar.h
#import <foundation/foundation.h>
@interface aCar: NSObject
{
    NSString * company;
    NSString * model;
    NSString * color;
    NSString * year;
    int yearsOwned;
    int numOfOwners;
}
-(void) setCompany:(NSString *)aCompany;
-(NSString *) company;


-(void) setModel:(NSString *)aModel;
-(NSString *) model;


-(void) setColor:(NSString *)aColor;
-(NSString *) color;


-(void) setYear:(NSString *)aYear;
-(NSString *) Year;


-(void) setYearsOwned:(int)aYearsOwned;
-(int) yearsOwned;


-(void) setNumOfOwners:(int)aNumOfOwners;
-(int) numOfOwners;


@end


// main.c
#import <Foundation/Foundation.h>
#import "aCar.h"


int main(int argc, const char * argv[])
{
    @autoreleasepool
    {
        aCar * c1=[[aCar alloc]init];

        [c1 setCompany:@"toyota"];
        [c1 setModel:@"hybrid"];
        [c1 setColor:@"green"];
        [c1 setYear:@"1990"];
        [c1 setYearsOwned:22];
        [c1 setNumOfOwners:1];
        NSLog(@"The company for this car is %@",[c1 company]);
        NSLog(@"The model is %@",[c1 model]);
        NSLog(@"The car is %@",[c1 color]);
        NSLog(@"the year is %@",[c1 year]);
        NSLog(@"How many years owned:%d",[c1 yearsOwned]);
        NSLog(@"This car has had %d owner.",[c1 numOfOwners]);



        }
    return 0;
}