C or C++ (preprocessor) DATE_YEAR is macro that resolves to an ascii string for the current year in which the code was compiled.
#define DATE_YEAR (__DATE__ + sizeof(__DATE__) - 5)
cout << "Copyright " << DATE_YEAR << " Foobar Inc. All rights reserved.";
printf("Copyright %s Foobar Inc. All rights reserved.", DATE_YEAR);
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