Initialize empty vector in structure - c

Question

I have a struct    typedef struct user       string username      vector lt unsigned char gt  userpassword    user t    I need to initialize userpassword with an empty vector   struct user r           What should I put instead of

User · Answer

How about  user r              or  user r          0       or   user r       std  vector lt unsigned char gt        or  user r

User · Answer

Both std  string and std  vector lt T gt  have constructors initializing the object to be empty  You could use std  vector lt unsigned char gt    but I d remove the initializer

User · Answer

Like this    include  lt string gt   include  lt vector gt   struct user       std  string username      std  vector lt unsigned char gt  userpassword      int main         user r       r username is    and r userpassword is empty

User · Answer

The default vector constructor will create an empty vector  As such  you should be able to write   struct user r     string    vector lt unsigned char gt         Note  I ve also used the default string constructor instead of      You might want to consider making user a class and adding a default constructor that does this for you   class User     User        string username    vector lt unsigned char gt  password       Then just writing   User r    Will result in a correctly initialized user

[c++] Initialize empty vector in structure - c++

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