This is a bidirectional circular linked list; Enter the student id; Will delete the student number of node; Then press the # end; But it would be an error after #; How to return a responsibility?
Of new solving!!!!!

CodePudding user response:

Null pointer will operation failure

CodePudding user response:

Could it be NO!="#" this sentence has a problem, a single character is to use single quotation marks

CodePudding user response:

No, change the complains

CodePudding user response:

To judge, null, will not be able to access!