A carbon atom is a group 14 element that has atomic number 6. Electronic distribution of carbon atom is 2, 4.
So, there are four valence electrons presents in a carbon atom. In order to attain stability carbon atom needs to be bonded to four electrons of another atom.
A carbon atom usually bonds with another atom by sharing of electrons.
Hence, we can conclude that a carbon atom is able to form covalent bonds with other atoms.