Here is apex trigger for creating contact when new account record is get added.
trigger AccountTrigger2 on Account(after insert) {
if (trigger.isInsert && trigger.isAfter) {
List < Contact > lstContact = new List < Contact > ();
for (Account acc: trigger.new) {
Contact con = new Contact();
con.FirstName = 'Test Contact' + acc.Name;
con.LastName = 'Test';
con.AccountId = acc.Id;
lstContact.add(con);
}
if (!lstContact.isEmpty()) {
database.insert(lstContact);
}
}
}
Watch the video for clarity