How to encrypt messages (Substitution cipher) - C Programming

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Going over a coding problem which requires us to encrypt text using a Substitution cipher, and solving it with the help of the C programming language.

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BogdanBudaca

Usually I solve the exercises by myself then come here to check which path did end up choosing to pursue. Specially when I'm not super satisfied with my own solutions. It always gives me clarity on the logical aspect of things. Cheers from brazil

lpataro

After watching your videos, the programs seem so simple and doable!
Thanks, man.

sanitarora

Love your channel. Pls keep on making videos like these. Pleaseee. They are life saving

maanvijoneja

sir you are the best <3
thank you so much i try to solve it about 2 days and i miss
how to assign and equal two arrays
thank you so much 😊

this line helped me

switchingAlpha[i] =

green-coder

Thanks for your videos man, I like the way you explaining things.

AlexanderFedorOFF

This helped me a ton thank you! I was missing the bit about ASCII code subtraction.

josephsozio

Please make a video on plurality pleaseeee

maanvijoneja

Can you show the code that decrypt the thing you have just encrypted?

hieunguyentrung

between lines 32 and 41 is argv incrementing aswell, because its in the for loop. sorry im just not seeing where your substituting the plain text for the key

hexohydraheretic

HI, could you please tell me how can I write sustitution cypher program without fgets?

MKSundaram

Is this homophonic substitution or polygram substitution?

yaserthedev

Hi, would it be possible to explain how does the for loop after line 32 is related to char input [500]? Is char input [500] an array of 500 empty 'slots' that stores the difference between characters of plaintext and 'A' or 'a'? I'm new to this and have been trying to figure out how to implement the code for ciphering specifically. Would really appreciate it if there could be a way to explain what you meant in your code. Thank you.

aloysiuskuon

Are you a software engineer taking CS50 for fun?

davidkim

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