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POAda array access: Pointer to a specific item within the array, the position being dynamic based on input parameters.
 

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    <p>I'm working in Ada95, and I'm having difficulty figuring out pointers.</p> <p>I have code that looks like the following:</p> <pre><code>type vector is array (1 .. 3) of integer; type vector_access is access vector; my_vec : vector; procedure test is pointer : vector_access := my_vec'access; begin ... end; </code></pre> <p>This fails compilation on the definition of pointer, saying </p> <blockquote> <p>"The prefix to 'ACCESS must be either an aliased view of an object or denote a subprogram with a non-intrinsic calling convention"</p> </blockquote> <p>If I then change the definition of the vector itself to: </p> <pre><code>my_vec : aliased vector </code></pre> <p>it now returns the compiler error: </p> <blockquote> <p>"The expected type for X'ACCESS, where X denotes and aliased view of an object, must be a general acces type"</p> </blockquote> <p>At the end of the day what I really need is a pointer to a specific item within the array, the position being dynamic based on input parameters. Can anyone point me in the right direction?</p>
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