In this lab, you are required to write a function that reads integer inputs and add a node to a binary search tree. It should be able to perform in-order traversal of the tree and print it to the output. The input file purely contains integer range values in each line. >> cat input.txt 1 2 3 4 5 6 8 9 7 >> ./a.out input.txt output.txt (<- this runs the program) >> cat output.txt 1 2 3 4 5 6 7 8 9