$,$See image! IT IS IMPORTANT TO NOTE THAT EACH DIRECTORY CONTAINS $2$ files $.$c to be executed and get the answer, e$.$g$.20,30,40,$ etc. There are $2$ files per student called project$1.$c and project$2.$c$.$ When you execute the files you get a number that is the result. The $3$rd file is the report.txt containg the name and the registartion number of the student. There are $10$ students, each directory is called studenr$\_1,2,3...,10.$