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Welcome to the Rot13 in Algol68 page! Here, you'll find the source code for this program as well as a description of how the program works.
PROC usage = VOID: printf(($gl$, "Usage: please provide a string to encrypt")); PROC rot13 = (STRING s) STRING: ( INT code; STRING t; FOR n TO UPB s DO # If A-M or a-m, convert to N-Z or n-z by adding 13 to ASCII code # # Else, convert to A-M or a-m by subtracting 13 from ASCII code # code := ABS s[n]; IF isalpha(s[n]) THEN code +:= (tolower(s[n]) <= "m" | 13 | -13) FI; t +:= REPR code OD; t ); # Get 1st command-line argument. Exit if empty # STRING s := argv(4); IF UPB s = 0 THEN usage; stop FI; # Encrypt string with ROT13 and display # s := rot13(s); printf(($gl$, s))
Rot13 in Algol68 was written by:
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Note: The solution shown above is the current solution in the Sample Programs repository as of Feb 01 2023 12:00:13. The solution was first committed on Jan 24 2023 12:24:28. As a result, documentation below may be outdated.
No 'How to Implement the Solution' section available. Please consider contributing.
No 'How to Run the Solution' section available. Please consider contributing.