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So far in [[Objective-C 2.0 Essentials]] we have looked at the basics of programming in Objective-C such as variable types, flow control and looping. Although it would be possible to write a functional program using these techniques, there is much more to becoming a proficient Objective-C programmer. Objective-C is, above all, an object oriented programming language and as such any Objective-C programmer will be expected to create object-oriented applications using this language.

Once compiled, the ''bank'' executable can be run.

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