TECHY PINK

  Complete the   function in the editor below, which has   parameter: a pointer to the root of a binary tree. It must print the values in the tree's preorder traversal as a single line of space-separated values. Input Format Our test code passes the root node of a binary tree to the  preOrder  function. Constraints  Nodes in the tree  Output Format Print the tree's preorder traversal as a single line of space-separated values. Sample Input 1 \ 2 \ 5 / \ 3 6 \ 4 Sample Output 1 2 5 3 4 6 Explanation The preorder traversal of the binary tree is printed. Solution #include   < stdio.h > #include   < string.h > #include   < math.h > #include   < stdlib.h > struct  node {           int  data;      struct  node *left;      struct ...