11.3 Modify the preceding program in C11.2 so that the volume function handles a cube and a sphere. Incorporate #defi ne statements that would enable the function to be invoked in the following two...

11.3 Modify the preceding program in C11.2 so that the volume function handles a cube and

a sphere. Incorporate #defi ne statements that would enable the function to be invoked in the

following two ways:

fl oat radius, length, vol;

vol = volume(radius, SPHERE);

vol = volume(length, CUBE);