Read csv file in a 2-d array and edit data in C

I have a csv file and I want to read it in an array and then edit the values of a certain position. Here is an example of my file:

id; a; b; c; d; e; f; g; h
1; ; ; ; ; ; ; ; ; 
2; ; ; ; ; ; ; ; ; 
3; ; ; ; ; ; ; ; ; 
(...)

I declared an array (% w / o%) with 152 rows and 9 columns. How do I create a function to read the file in the array and allow the user to add a value, say to the "c" column in the third line, for example?

Sorry for the question being vague, but I already researched and I'm still lost on how to do this, I have not done much in the code. Thank you!