I'm wondering what kind of program that i need to compile with this http://msdn.microsoft.com/library/de...eentryname.asp

Code:
nRet = RasValidateEntryName(NULL, lpszEntry);
switch (nRet)
{
    case ERROR_SUCCESS:
        printf("Entry name: %s is valid but doesn't exist in the default phone book\n", lpszEntry);
        break;
    case ERROR_INVALID_NAME:
        printf("Entry name: %s is invalid\n", lpszEntry);
        break;
    case ERROR_ALREADY_EXISTS:
        printf("Entry name: %s already exists in the default phone book\n", lpszEntry);
        break;
    default:
        printf("RasValidateEntryName failed: Error = %d\n", nRet);
        break;
}