C programming file structure in linux

We have implemented a prototype version of a C program, tree.c, for showing graphically on the standard output, the structure of files and folders inside a particular folder, specified as follows #./tree folder path Regarding the output of the program; in every line on the standard output is shown the name of a file or the name of a folder between angle brackets in such a way that all the files and folders inside a particular folder are written in the same column. At the beginning of each line we have written the tag FILE or FOLDER in order to check the performance of the Linux utility. Testing the performance of the program for the current directory, where we have the particular structure of files and folders, < . > tree.c tree <tmp1> [login to view URL] <tmp11> [login to view URL] <tmp12> <tmp2> [login to view URL] we realize that, in principle, we get the right structure but the tag associated to files that are not in the first level of the tree is not right. So; 1.- Firstly, find what’s wrong in the prototype. Add comments to your findings and save the file as oldtree.c and submit it. 2.- Secondly, submit a right version of the program.