C# vs Object-C

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C#
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public class c_data {
    public double value;
    public int label;
    public int ID;
    public c_data() { }
    public c_data(double val) {
        value = val;
    }
}

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Object-C
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@interface CData : NSObject
{
    double value;
    int label;
    int ID;
}

@property double value;
@property int label;
@property int ID;

-(id) init;
-(id) initWithValue:(double)value;

@end

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