  We show how a dc current can be generated in a Hall bar without applying a
bias voltage. The Hall resistance $R_H$ that corresponds to this pumped current
is quantized, just as in the usual integer quantum Hall effect (IQHE). In
contrast with the IQHE, however, the longitudinal resistance $R_{xx}$ does not
vanish on the plateaus, but equals the Hall resistance. We propose an
experimental geometry to measure the pumped current and verify the predicted
behavior of $R_H$ and $R_{xx}$.
