Dears

Please could you help me to get the correct code to the below  issue? I need to take the value of the field name or address and save into a string value, after that these strings I will send via XML to external server.

Account a = [SELECT Name FROM Account WHERE Name = 'Foo' LIMIT 1];
String s = a.Name;// I can save it, but when I run the application I get another error.
String c = Account.Name;//second option I get the error "Illegal assignment from Schema.SObjectField to String".