C Programming for Data Structure and Algorithms : PageRank.c and searchPageRank.c required url links data .txt files from 2 layer down repository(directories) , please help for parse .txt data so that able to build graph for pageRank

\part1\01\collection.txt contents as bellows:

[whitespace 1st line] url11 url21 url22 url23 url31 url32 url34 then add links with all below .txt files means that need to read the same sub-repository level .txt and store in string variable for graph, thank you.