Determinant stays the same after matrix transposition (i.e. row vector matrix would produce the same determinant as column vector one).

@Greentea_cup

  char **result = malloc(size);

size is not enough

426 people passed the C kata so I am sure there are no problem in the C version.

C solution attempt results in "Unexpected signal: 6", "double free or corruption (out)".
All sample tests passed.

Same for empty string (especially in C).

Thank you! This helped me alot