Create a unique numeric code

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João Carvalho
João Carvalho 2017-11-29
编辑： Stephen23 2017-11-29
I have a notepad with the following format:
  • Column 1 - Code;
  • Column 2 - Username;
  • Column 3 - Password;
  • Column 4 - Name;
The objetive of my program is to add new users to the notepad.
So, how can I create a unique numeric code for the new user between 1 and 99 and add the new user to the list? The code must match the lowest available number in the list.
Thanks
  1 个评论
Stephen23
Stephen23 2017-11-29
编辑：Stephen23 2017-11-29
"I have a notepad..."
No, you have a text file.
Notepad is a Microsoft text editor, i.e. it is an application that runs on a computer. A text file is a kind of computer file containing text data.

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回答（1 个）

Walter Roberson
Walter Roberson 2017-11-29
hint: textscan or fscanf with format
'%f%s%s%[^\n]'

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