Can I adapt old lenses to pentax k?

Here is what the site says about that.

From Pentax K: Pentax K: Pentax's DSLR mount since 1975: decades of lenses still fit the current bodies, which have stabilisation built in. Old manual K lenses fit directly.

From Pentax K-70: Adapting lenses: Old manual K lenses fit directly.

Quoted from this site's pages.