How to read and save in a variable part of a txt in C

I have been looking for some answers about this subject but I only see stuffs like: read something with spaces and show it onto the screen.

My question is a similar one but adding a variation.

Imagine that you have in a file:

michael;man;25,34,12,34

My question is, how can you take this line and save the numbers, and only the numbers in some array?

I have been trying the typical thing of read the line and show it for doing some tests, but I can't find how to keep this part in some array:

const int NUMBEROFLINES = 4;
FILE *fp
int i;
char leer[100] = "";

    fp = fopen("name.txt", "r");
    if (fp == NULL)
    {
       perror("ERROR");
    }
  for (i=0;i<NUMBEROFLINES;i++)
  {
   fgets(read, 100, fp);
   puts(read);
   read[strlen(leer)] = '\0';
} 
close(fp);