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Hi please see the link for the code I am working with. I think the layout is correct but cannot seem to find the correct algorithm to solve this problem.

https://github.com/ionakathryn/cs50-pset2/blob/master/vinigere.c

Thanks

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I haven't run your code, but I have noticed a couple of points that could potentially cause a problem. Firstly in your printf statement on your first shift algorithm 

printf("%d", ((p[j]-65)) + (toupper(k[count]-'A')) %26 + 65);

you have used %d as a placeholder instead of %c; %d is used for numbers so you are likely to get a numeric value printed out here.

I believe there could be another possible issue with your k[count] because you are incrementing count using count++ before you have used the original value. So you won't be accessing the first letter in your key (key[0]) because you have already changed 0 to 1 before it is used.

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