期末考复习

Question 12

In the context of the declarations that have been provided, write a function

int sum_tree(tree_t *t);

that applies another function

 int get_int(data_t *d)

to each data item stored in the tree, and calculates and returns the sum of the integer values generated by the calls to get_int(), added up over all of the data_t elements stored in the tree. If t is empty then sum_tree(t) should return zero. You do not need to write get_int(), and may call it without knowing anything about its operation.

Include a comment prior to each main block of code to indicate your intentions.

Be sure to select "Preformatted" for the LMS text box before you enter each answer, and (if necessary) again after you have typed your answer. You will need to use spaces for indentation, as tabs cannot be typed into the LMS text box.

malloc tree struct typedef

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