If you're using a version of Quartus II lower than 13.0, use the instructions for earlier versions.

Simulation using QSim for version 13.0

Note: In version 13.0 of Quartus II, QSim can be opened directly from within Quartus II, however it only works with Cyclone devices. If you've already chosen a non-Cyclone device, switch to a Cyclone device to do the simulation. Once you know your logic is correct, you can switch back to your original device.

To open QSim, File | New | New University Waveform File.
Select Edit | Insert | Insert Node or Bus.
Select Node Finder.
Select List.
Select the double right arrow to choose all.
Select OK.
Select OK.
If you have multiple inputs, you can select a bunch and group them with one counter.
Select your input(s), and pick Overwrite Count Value.
Select OK.
In the Main window, select Simulation | Options and then select Quartus II Simulator. Select OK.

Note: If you haven't chosen a Cyclone device, the Quartus II Simulator option will be greyed out.
In the Main window, select Simulation and then select Run Functional Simulation.

( Alternatively, you can you the button on the tool bar.)
Now you should see your simulation output with the outputs defined. Note: The file will indicate "read-only" meaning you can't edit it.

You can expand the grouping:
You can navigate around the timeline, zoom in and out, etc.

This part of the output shows that when the inputs are all zero, the output is also zero.

This part of the output shows that when c and h are low, and p is high, the output is high.

This part of the output shows that when c and p are low, and h is high, the output is also high.

You can repeat this process to check all of the eight possible input combinations.
Now if you want, you can go back to the simulation settings and choose Timing instead of Functional to see the effects of propagation delay.
In the Main window, select Simulation and then select Run Timing Simulation.

( Alternatively, you can you the button on the tool bar.)