如何用C编程语言将内存中的树数据结构复制到磁盘?
You need to serialize it, ie figure out a way to go through it serially that includes all nodes. These are often called traversal methods .
Then figure out a way to store the representation of each node, together with references to other nodes, so that it can all be loaded in again.
One way of representing the references is implicitly, by nesting like XML does.
The basic pieces here are:
That should be about all the info you need to do the job.
Alternatively, if you use an array-based tree (with array indexes instead of pointers, or with the links implied by their position in the array) you could just save and load the whole shebang without any further logic required.
Come up with a serialization (and deserialization) function. Then run it and send the output to a file.
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