Preprocessor directives are commands that are interpreted by the compiler and affect the output or behavior of the build process. But the C# compiler does not have a separate preprocessor, like C and C++ you cannot use these directives to create macros. Preprocessing directives are top lines in our program that start with '#'. The '#' is followed by an identifier that is the directive name.
United Healthcare Customer Service. 866-633-2446. Before dialing United Healthcare Customer Service. We've tried for years to eliminate the time on hold for you. But the fact is that it can still take many phone calls to United Healthcare to resolve your issue.
Customers are informed that they can call from 7am-1am ET, 7 days a week which will be directed to Synchrony Bank for OCard customer service. 1  Customer Service: 888-345-5788. 2  QCard Customer Service: 877-490-1787. 3  Customer service phone number: 0800 51 41 31.