  Numerical semigroups have been extensively studied throughout the literature,
and many of their invariants have been characterized. In this work, we
generalize some of the most important results about symmetry, pseudo-symmetry,
or fundamental gaps, to affine $\mathcal C$-semigroups. In addition, we give
algorithms to compute the tree of irreducible $\mathcal C$-semigroups and
$\mathcal C$-semigroups with a given Frobenius vector.
