清华大学出版社的《matlab7简明教程》的电子教案

				%例10-11  try-catch模块的应用举例。
				
				>> X=magic(4);
				>> Y=ones(4,3);
				>> try
				        Z=X*Y
				catch
				      Z=nan;
				  disp('X and Y is not conformable.')
				end
				>>Z
				>> X=magic(4);
				>> Y=ones(3,3);
				>> try
				  Z=X*Y
				catch
				disp('Xand Y is not conformable.')
				end
				X and Y is not conformable.
				>>