C: Problem in Caesar Cipher

Question

Hi all,

Just a noob here.

I tried to implement basic Caesar cipher in C.

More generally, Caesar’s algorithm (i.e., cipher) encrypts messages by "rotating" each letter by k positions. More formally, if p is some plaintext (i.e., an unencrypted message), pi is the ith character in p, and k is a secret key (i.e., a non-negative integer)

My code seems to have a problem; I have found the problem already. But will you be able to find it? And will you be able explain it?

To make things easier, I have predefined the key(k) in the code. All you have to do to is to enter a plain text. the program in return will show the encrypted text.

You can find my code here:
https://code.sololearn.com/c4fJFx8QDB8W/?ref=app

Quick tip: try entering "Hello, world!"

Answer 1

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