A parameter in the CLUTO_SP_GraphClusterRB routine

I don't understand the exact meaning of the "crvalue" parameter.Does it indicate all the edges in the edge-cut?It looks like the weight of the edges.If it's this case,I want to know whether it requires my application to allocate the memory for it.

RE: The crvalue is the value of

The crvalue is the value of the edge-cut of the resulting clustering solution. So it is not the list of edges that were cut, but just the sum of the weights of the cut edges.
This is a scalar quantity. Your application needs to supply a pointer to a floating point variable that this value will be stored at (i.e., the application is responsible for providing the memory for that variable).