Adding floats from file to matrix in C

Question

I'm having problem taking a list of floats from a txt file and putting them in a matrix.
the file is structured like 15 floats per line and an undefined number of lines
https://code.sololearn.com/csDvBsTZjHrS/#c

Answer 1

Not getting the reason yet. I just noticed that <buffer> is 100 bytes (defined at line 7), why read 128 bytes at line 19, 20 and 33?

Answer 2

Thanks now the code partially works but it has some problems adding the values to the matrix, there are a lot of errors