all correct→ wrong

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all correct→ wrong

bxsciencer 1257286385|%e %b %Y, %H:%M %Z|agohover

is there any reason for a program in a loop to run correctly once and then be wrong the rest of the time?

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Re: all correct→ wrong

graphmastur 1257291773|%e %b %Y, %H:%M %Z|agohover

Code and language please. ;-) I guess it's possible. The reason is still unknown, though…

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"But sanctify the Lord God in your hearts, and always be ready to give a defense to everyone who asks you a reason for the hope that is in you, with meekness and fear;" ~ 1 Peter 3:16

Re: all correct→ wrong

_Abe_ 1257292530|%e %b %Y, %H:%M %Z|agohover

Possibly a file was left unclosed by the program or a specific set of variables/conditions lets it work right.

Re: all correct→ wrong

bxsciencer 1257297629|%e %b %Y, %H:%M %Z|agohover

im writing SHA 1 in python

the basics is this:

# input is 'abc' in ASCII
# skey is a 80 entry list generated a bit earlier, and i know i got correct values for them
 
h0 = 0x67452301; h1 = 0xEFCDAB89; h2 = 0x98BADCFE; h3 = 0x10325476; h4 = 0xC3D2E1F0
a = h0; b = h1; c = h2; d = h3; e = h4
 
for x in range (80):
    if x <=19:
        f = (b and c) or ((not b) and d)
        k = 0x5A827999
    ... 
    ...        #(other 'if's that the program hasnt even gotten up to before it errors)
    ...
    temp = add([shift_left(a,5) , f , e , k , skey[x]])
    e = d
    d = c
    c = shift_left(b,30)            # rotate, not really shift
    b = a
    a = temp
 
    h0 = add([a,h0]) # add mod 2^32
    h1 = add([b,h1]) # these arent really used within the loop;
    h2 = add([c,h2]) # only their final outputs matter
    h3 = add([d,h3])
    h4 = add([e,h4])

initial data (the 'h' s)= 67452301 efcdab89 98badcfe 10325476 c3d2e1f0

a+b+c+d+e (strings) are supposed to =
     a        b      c         d        e
0116fc33 67452301 7bf36ae2 98badcfe 10325476, when x = 0
8990536d 0116fc33 59d148c0 7bf36ae2 98badcfe, when x = 1

but i got
0116fc33 67452301 7bf36ae2 98badcfe 10325476, when x = 0
0987bf51 0116fc33 59d148c0 7bf36ae2 98badcfe, when x = 1

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last edited on 1257297798|%e %b %Y, %H:%M %Z|agohover by bxsciencer + show more

Re: all correct→ wrong

graphmastur 1257298310|%e %b %Y, %H:%M %Z|agohover

The reason it errors, is that "and", and the rest of them, are not binary operations. They are logic operations. Wow. Haven't done python since lunch. 8-)

Sorry, didn't realize that until now. Sorry for not pointing that out in the other topic.

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"But sanctify the Lord God in your hearts, and always be ready to give a defense to everyone who asks you a reason for the hope that is in you, with meekness and fear;" ~ 1 Peter 3:16

Re: all correct→ wrong

bxsciencer 1257299915|%e %b %Y, %H:%M %Z|agohover

well, i did write separate functions called OR, AND, and NOT, but after implementing them, all the outputs were wrong, even though i checked that the new functions worked properly

how many programming languages do you know??? where do you people learn so much???

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last edited on 1257299999|%e %b %Y, %H:%M %Z|agohover by bxsciencer + show more

Re: all correct→ wrong

bxsciencer 1257300123|%e %b %Y, %H:%M %Z|agohover

okay. wait. i fail. i forgot there were bitwise operators

i got it now

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last edited on 1257301047|%e %b %Y, %H:%M %Z|agohover by bxsciencer + show more

Re: all correct→ wrong

graphmastur 1257300566|%e %b %Y, %H:%M %Z|agohover

I learned programming languages for the fun of it. Okay, so I'm a mega geek, but… Here's a list of the programming languages I have programmed before, but don't completely know. Mainly languages, like HTML or javascript, are ones that I haven't programmed in forever.

HTML, Javascript, Java, Some python, C, xml, TI-basic, Little CSS (I still know the syntax, I'm just not very good at it).

There are more, but they aren't coming to me, so they are probably not important. I just like programming. It's a gift that God gave me, and therefore, I will use that gift.

Okay, have fun with python. I mostly program in Java. Although, I want to learn flash.

As for how people know all of these programming languages, I guess it's how our brains work. I can remember all of the methods of Java.math.bigInteger, but couldn't remember a name for my life. Oh well.

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"But sanctify the Lord God in your hearts, and always be ready to give a defense to everyone who asks you a reason for the hope that is in you, with meekness and fear;" ~ 1 Peter 3:16

Re: all correct→ wrong

bxsciencer 1257301149|%e %b %Y, %H:%M %Z|agohover

wow……………..

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Re: all correct→ wrong

graphmastur 1257301780|%e %b %Y, %H:%M %Z|agohover

I have a life, I promise… I just have to find it in the comments in my program…

It's actually about as impressive as if someone comes up to me and tells me a football play. I just don't understand it. Programming is just something I get. It's orderly and structured.

I think it is just as amazing with those encryption algorithms you know.

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"But sanctify the Lord God in your hearts, and always be ready to give a defense to everyone who asks you a reason for the hope that is in you, with meekness and fear;" ~ 1 Peter 3:16

Re: all correct→ wrong

bxsciencer 1257304036|%e %b %Y, %H:%M %Z|agohover

i still wish i knew as much as you

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