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iOS

Posted by nirmalabasdeo
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nirmalabasdeo
Python Development Techdegree Student 3,787 Points

Error message:Unexpected identifier or '('

I am trying to create a calculator class with methods but keeps getting an error. Error message reads" unexpected identifier or '('. Below is the code.

#import <Foundation/Foundation.h>

@interface Calculator ;NSObject
{
@property float numerator;
    @property float denominator;
    @property float total;
    @end
 }
-(void) add;
-(void) divide;

Moderator edited: Markdown added to code to make it render properly on the forums. Category switched to iOS as the code given is Objective-C.

Jon Wood
Jon Wood
9,884 Points
Jon Wood
Jon Wood
9,884 Points

Is that for iOS? It looks like Objective-C :p

nirmalabasdeo
.a{fill-rule:evenodd;}techdegree
nirmalabasdeo
Python Development Techdegree Student 3,787 Points

@Jon Wood

Yes that is Objective C. I am now learning it so just two methods. But I cant seem to get pass that error to do anything else.

1 Answer

Jennifer Nordell
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STAFF
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Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
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Jennifer Nordell
Treehouse Teacher

Hi there! I've taken a look at your code and there are a few problems. First, on the line with @interface you have a semicolon instead of a colon. Secondly, remember that methods are just functions defined inside a class. So your function definitions need to be before the @end. Third, the curly braces are not needed for your particular example. We would use them when defining what happens inside the method. But even when I reworked your code, I still had to rebuild the file to get rid of all the errors. Take a look at my code that was able to build.

#import <Foundation/Foundation.h>

@interface Calculator : NSObject
    @property float numerator;
    @property float denominator;
    @property float total;

    -(void) add;
    -(void) divide;
@end

Hope this helps! :sparkles:

nirmalabasdeo
.a{fill-rule:evenodd;}techdegree
nirmalabasdeo
Python Development Techdegree Student 3,787 Points

Hello Jennifer,

Thank you for your response and it did help big time!