How to put an arrow above a letter?

Question

Can anyone help me put $\rightharpoonup$ above $C_3$ in latex? Need to do so to indicate line integral for Green's Theorem.

Any help would be appreciated.

Answer 1

Would this work: $\overset{\rightharpoonup}{C_3}$?

The code is: \overset{\rightharpoonup}{C_3}