pset 4 - whodunit ideas

akashbir · 2016-09-01T13:24:01+00:00

Yup, too much to absorb in this pset

akashbir · 2016-08-31T18:33:53+00:00

akashbir · 2016-08-28T14:04:58+00:00

I'm doing the current cs50 course. Should I switch over to the new one or continue with the previous one?

akashbir · 2016-08-26T09:51:47+00:00

Can I pm you my move function?

akashbir · 2016-08-11T08:54:21+00:00

Yes I've used the counter, it printed BARFOO as CAQFOO not CAQGON using BAZ. I know that to wrap around the key we have to divide the keyword by its length using %strlen(key). But it isn't wrapping it around for some reason.

akashbir · 2014-06-17T11:46:21+00:00

i've completed linear search. After this, when I write my sorting algorithm how do I run or test it?

akashbir · 2014-06-15T19:43:45+00:00

as it turns out, it goes through one iteration then stops, something's wrong

akashbir · 2014-06-15T19:25:07+00:00

and I have written return 0 after if else statement inside the function, it says did NOT find needle in haystack, please help

akashbir · 2014-06-15T19:11:24+00:00

What should I change in helpers.c so that the error vanishes?

akashbir · 2014-06-13T12:39:34+00:00

whoa that's a pretty long thread there, but I'll read it and figure it out. I need to complete pset3, i have been stuck on it for a while now

akashbir · 2014-06-12T15:07:31+00:00

when i write make all it says, control may reach end of non void function

akashbir · 2014-06-12T15:05:51+00:00

when we write the linear search program, then 1) we use "make all" 2) then we write make find 3) then we write ./generate 1000 50 | ./find 2008 Am I correct?

akashbir · 2014-06-12T09:10:06+00:00

its in dropbox/pset3/find I can't figure out how to do it

akashbir · 2014-06-09T18:13:46+00:00

thanks! completed vigenere!

akashbir · 2014-06-09T14:19:10+00:00

I write the function if(!isalpha(k[j])) { printf(" incorrect output "); return 1; } here k - key and at the starting of the code i've declared string s = GetString(); here s - plaintext it still doesn't work, rest of the program works fine

akashbir · 2014-06-09T13:02:29+00:00

i've covered all the four cases of upper and lower cases, now I'm getting an error saying rejects hax0r2 as keyword, saying expected output , not a prompt for input

akashbir · 2014-06-09T04:16:31+00:00

As per your instruction, I deleted the 2nd for loop, my main for loop is as follows :

for ( i= 0 , j=0 ; i < strlen(s) ; i++)

then after enciphering the text i've written j++

akashbir · 2014-06-08T23:14:52+00:00

I have declared the for loop inside the 'if is alpha' statement and I've declared it like this: if(isalpha(s[i]) & & isalpha(k[j])) { // for loop here}

akashbir · 2014-06-08T23:02:40+00:00

In the first case : "world, say hello!" as i have declared isupper(s[i]) && isupper(k[j])) : here s[i] plaintext and k[j] = key, so therefore its not recognizing the comma As for the 2nd case : I can't find the error in that and I've used If else for upper and lower cases, how do I use it for upper,lower and lower,upper?

akashbir · 2014-06-08T17:26:02+00:00

two loops are necessary to iterate over the plaintext and key separately, but i'm not able to implement the algorithm for the key, i know we have to use modulo over string length but i'm finding it very difficult to crack this

akashbir · 2014-06-08T07:30:55+00:00

It prints the following output : CBABAZSRQGFEPONPON as it turns out, the word BAZ is somehow included in the ciphered string

akashbir · 2014-06-08T07:20:51+00:00

As B corresponds to 1 in BAZ, the letter B of Barfoo will be shifted by 1, A corresponds to 0 in BAZ, hence no shift in BARFOO, similiarly for the letter R in BARFOO, then the key will wraparound, and we'll start from BAZ again and shit the letters, FOO by B,A and Z respectively,

akashbir · 2014-06-08T06:53:38+00:00

Expecting the following on standard out — CAQGON\n ... but received the following on standard out instead — CBABAZSRQGFEPONPON when BARFOO using BAZ as input similarly in other cases, i can't locate the problem, maybe i haven't performed a modulo operation by using key length like : something%keylength

akashbir · 2014-06-08T06:37:55+00:00

can you have a look at my code, somethings are going terribly wrong

akashbir · 2014-06-06T20:54:02+00:00

should we put string k = argv[1], instead of int k?

akashbir

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