Description: Simulate mobile phone communication recording management system and realize the management of communication records in mobile phones. The function requirements are as follows:
(1) view function: when selecting this function, list the following three options.
Office class a.
A human B
Business class C
The name and phone number of all such data is displayed when a class is selected.
(2) add function: can input new data
One node includes: name, telephone number, classification, (office, human, business), email.
For example: Yang chun 13589664454 business class chuny@126.com
When the duplicate name and phone number are entered, the data entry is repeated and the input is cancelled. When there are more than 15 pieces of information in the communication record, the storage space is full and no new data can be entered. Incoming new data can be automatically coded in ascending order.
(3) modify function: when selecting a person's name, the corresponding data of the person can be modified.
(4) delete function: when the name of someone is selected, the corresponding data of the person can be deleted, and the number of subsequent items will be adjusted automatically.
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