How to extract a static int from a method after calling it multiple times

For my beginner's level independent study of Objective-C, I was asked to add a counter to a class, so that each time a method was used on it, it would ++. However, I misinterpreted this as "Each time the method the method is called, ++." After realizing how to do what was asked of me, I pondered how I could fashion a method that would return a counter in addition to what the method was called to return. If I were to use a static int in addition to variable++; on each call of the method, how can I extract that value o开发者_Go百科f variable in my main program?

Example code from comment:

-(Fraction *) add: (Fraction *) f {
    static int fractaddcount;
    fractaddcount++;
    Fraction *result = [[Fraction alloc] init];
    result.numerator = numerator * f.denominator + denominator * f.numerator;
    result.denominator = denominator * f.denominator;
    return result;
}

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Make fractaddcount an instance variable and initialize it to 0 in the init method. Then it can be accessed by other methods in the class.

Additionally if you make it a property other classes will be able to access it. You can even make the property readonly in the .h file and read/write in the .m file (class extension).

Example:
in .h:

@property (non atomic, readonly, assign) int fractaddcount;

in .m:
in class extension:

@Interface TheClassName ()

@property (non atomic, readwrite, assign) int fractaddcount;

@end

in the implementation:

@synthesize fractaddcount;

in init: This is somewhat optional since when the class is instantiated the ivars are cleared to nil (0).

fractaddcount = 0;

in your code:

self.fractaddcount = self.fractaddcount + 1;