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10. Pointers are problems

Pointers are not required for general purpose programming. In modern languages like Java there is no support for pointers (Java internally uses pointers). Pointers make the programs messy and programs using pointers are very hard to read.

Avoid using pointers as much as possible and use references. Pointers are really a great pain. It is possible to write an application without using pointers. You should pointers only in those cases where references will not work.

A reference is an alias; when you create a reference, you initialize it with the name of another object, the target. From the moment on, the reference acts as an alternative name of the target, and anything you do to the reference is really done to the target.

Syntax of References: Declare a reference by writing the type, followed by the reference operator (&), followed by the reference name. References MUST be initialized at the time of creation. For example -

        int     weight;
        int     & rweight = weight;

        DOG     aa;
        DOG     & rDogRef = aa;

Do's of references -

Do not's of references -

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