How to insert a user using apex with a contact linked with it in Salesforce?

Hi,

We can crteate a user using apex like this:-

User u = new user();
u.LastName = 'Temp';
u.Email = 'temp@test.com';
u.Alias = 'Tc';
u.Username = 'temp44@test.com';
u.CommunityNickname = 'test12';
u.LocaleSidKey = 'en_US';
u.TimeZoneSidKey = 'GMT';
u.ProfileID = '00e90000000oyi5';
u.LanguageLocaleKey = 'en_US';
u.EmailEncodingKey = 'UTF-8';
insert u;

and add contact like this :-

try {
    Account acct = new Account(Name='Account');
    insert acct;
    // Add a contact to this account.
    Contact con = new Contact(
        FirstName='Jojo',
        LastName='Smoke',
        Phone='7875666677',
        AccountId=acct.id);
    insert con;
} catch(DmlException e) {
    System.debug('An unexpected error has occurred: ' + e.getMessage());
}

I hope this will help you.