Parsing links from one site

Welcome to everyone. You need parsing links from one site. I have a database where notebooks with links are scattered across different folders. And I need a program that can quickly check all these links in each folder and note in the same notebook opposite the non-working link, that it doesnt work. The link on the site leads to the sellers page on this site. The program should open the link and if it opens normally, then fine, and if there is an inscription that the sentence does not exist or something similar (how we will work, write an exact phrase), then opposite this link should write that the link does not work. Lets negotiate the price.
Fundamentally, the program should be written on the C, with the provision of the programs source code.