//get subsequent lines into a char buffer
while (fgets(line,MAX_LINE_LEN,file_ptr))
{
   // tokenize the first item by comma delimiter
   line_ptr = strtok(line,",");
 
   while(line_ptr != NULL)
   {
      // if there's a decimal point, assume token is float (double)
      if (strstr(line_ptr,"."))
         floatArray[floatIndex++] = atof(line_ptr);
 
      // otherwise, it's asssumed to be an integer
      else
         intArray[intIndex++] = atol(line_ptr);
 
      // tokenize subsequent items by comma delimiter
      line_ptr = strtok(NULL,",");
 
   }
}

int r, c;
int arr[numRows][numCols];
while(/*there's another line*/)
{
  for(c = 0; c < 4 /*num cols*/; c++)
  {
    arr[r][c] = /*data read*/;
  }
  r++;
}