Create a program “The registration system”. You will input n users. Each time you have inputed user “OK” message will appear. If there is an user that already exist “username1” message will appear. Everytime number should increment.
Input: Output:
5
abs OK
bcd OK
abs abs1
bcd bcd1
abs abs2

egormixajlov1    2   25.02.2021 04:20    2