Questions tagged [wraparound]

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Vigenère wrap around

I'm stuck on pset2 Vigenère for a couple of days now. What's left for me to do is the wrap around. A recent draft of the below program compiled and worked fine if the length of the plaintext was equal ...
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1answer
116 views

Pset2 - Vigenere Cipher Shifting An Extra 13 Letters To The Right

My vigenere code is compiling and executing; however, despite the wrap-around functionality working, whatever I type seems to shift an extra 13 letters to the right: Plaintext: ...
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2answers
355 views

Pset2 - Caesar (less comfortable) wraparound problems

if (isalpha(plain[i])) if (isupper(plain[i])) { printf("%c", ((plain[i]-65) + k) % 26); } if (islower(plain[i])) { printf("%c", ((plain[...
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1answer
88 views

PSET2, Vigenere: Wraparound is not working properly

I'm having trouble to reset the j'th value to zero whenever we use all the letters of the key. This code prints a weird conglomerate of symbols smth like ( {[{Y}]}{[Y}]} ... ). Thanks for the help! #...
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2answers
427 views

pset2 vigenere wraparound

I can't figure out how to wrap the k[i] in the formula c[i] = (p[i] + k[i]) % 26 I know the if and else code's are different, that's to illustrate the main implications I've tried. also the printf("%...
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1answer
72 views

Unable to make string wrap around in PSET2

I am unable to make my key wrap around. The first three letters are working, however, after those, the program stops working and outputs garbage (or really secure cipher :)) Code (Removed) CS50Check
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1answer
106 views

Help! Problem with key wraparound for pset2 vigenere

I'm having trouble with the wraparound function of vigenere in (pset 2). The troublesome line of code is the one below, I suspect. Would greatly appreciate any and all advice! :) int adjustedkey = (...
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1answer
140 views

Don't know where to start for key wraparound in vigenere pset2

First off, I've done everything for Vigenere except wraparound the code. So if I am printing something that is of equal or lesser length to the key, it works perfectly. Problem is I don't even know ...
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1answer
282 views

Pset2 Caesar wrap around result is inexplicably incorrect

I'm feeling somewhat silly about this, but for some reason whenever the inputted message in my implementation of the caesar cipher requires a wrap around, I end up with an incorrect letter in a ...
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1answer
214 views

pset 2 vigenere help

I have been working on vigenere for a long time now, and here is my issue. plaintext cab with a keyword of ab returns ccbbbb. so, the plaintext is enciphering correctly but the last letter is ...
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2answers
768 views

How to wrap around the jth element in vigenere cipher efficiently?

I have seen a lot of solutions to this but still didn't found the efficient solution for wrapping around for the non-alphabet character in the text to be encrypted. What I did was jth position (...