I'm attempting to work in Fotran 77, and I've found the need for a tree based data structure. Aside from implementing a tree with an array, is there any way to build a tree with pointer nodes to other nodes, as per a standard implementation in most languages?
The documentation for this beast is scarce, and there doesn't appear to be any standard structure type that would make this possible.
Thoughts?
Without Cray pointers or other hackery, the only way to implement a "data type" is with parallel arrays, each of which represents a field. An index, then, can refer to an instantiation of the data type.