申論 1給予如下二元樹節點的宣告，分別寫出C 的遞迴程式計算二元樹節點個數及計算二元樹葉節點（leaves）個數（Count the number of nodes in abinary tree and count the number of leaf nodes in a binary tree,respectively）。（25 分）struct node{int info;struct node *left;struct node *right;}typedef struct node *NODEPTR;void countTree(NODEPTR tree){}void countLeaves(NODEPTR tree){}