"Missing context for method declaration" for overridden description method - objective-c

Question

Am getting a "Missing context for method declaration" for my overridden description method. Can you tell what's wrong with the code?
#import <Foundation/Foundation.h>
#import "BNRItem.h"
int main(int argc, const char * argv[])
{
#autoreleasepool {
// Create a mutable array object, store its address in items variable
NSMutableArray *items = [[NSMutableArray alloc]init];
BNRItem *p = [[BNRItem alloc]init];
NSLog(#"%# %# %# %d", [p itemName], [p dateCreated], [p serialNumber], [p valueInDollars]);
// This creates a new NSString, "Red Sofa" and gives it to the BNRItem
[p setItemName:#"Red Sofa"];
// This creates a new NSString, "A1B2C" and gives it to the BNRItem
[p setSerialNumber:#"A1B2C"];
// We send the value 100 to be used as the valueInDollars of this BNRItem
[p setValueInDollars:100];
// Destroy the array pointed to by items
items = nil;
}
return 0;
}
-(NSString *)description // Missing context for method declaration
{
NSString *descriptionString =
[[NSString alloc]initWithFormat:#"%# (%#): Worth $%d, recorded on %#",
itemName;
serialNumber;
valueInDollars;
dateCreated];
return descriptionString;
}
BNRItem.m
#import "BNRItem.h"
#implementation BNRItem
-(void)setItemName:(NSString *)str {
itemName = str;
}
-(NSString *)itemName {
return itemName;
}
-(void)setSerialNumber:(NSString *)str {
serialNumber = str;
}
-(NSString *)serialNumber {
return serialNumber;
}
-(void)setValueInDollars:(int)i {
valueInDollars = i;
}
-(int)valueInDollars {
return valueInDollars;
}
-(NSDate *)dateCreated {
return dateCreated;
}
-(NSString *)description
{
NSString *descriptionString =
[[NSString alloc]initWithFormat:#"%# (%#): Worth $%d, recorded on %#",
itemName,
serialNumber; // Expected "]"
valueInDollars, // Expression result unused
dateCreated]; //Extraneous "]" before ";"
return descriptionString;
}
#end

Answer 1

Your method appears to be free floating inside main.m. An instance method needs to be placed inside the implementation section of a class. (between #implementation and #end).
My guess is that you should move that code into BNRItem.m.

Answer 2

If you have something like a char at the veryfirst beginning of your Header oder .m file, its also likely that this error accures.
^//
// EMServices.m
// MyController
//
// Created by EMart on 09.01.14.
// Copyright (c) 2014 EMart. All rights reserved.
//