Right now, quantum programs are commonly written in QASM, which essentially expresses operations that are the quantum analogues of classical logic applied to in

Right now, quantum programs are commonly written in QASM, which essentially expresses operations that are the quantum analogues of classical logic applied to individual qubits. If you want to compose those primitives into higher level structures you just call them from a higher level language like Python or Julia and use the provided means of abstraction. The 'C of quantum computers' as a concept doesn't really make sense, because the architecture of a quantum computer is fundamentally different to that of a classical one. I can go into more detail if anyone cares. Source: a masters in theoretical physics with a focus on quantum information processing.