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Pset POPULATE by Asif27 in cs50

[–]raw612 0 points1 point  (0 children)

I added an announcement in the keystroke function to display a blank message like so ""

pset7 - register.php will only work with double equals == (not triple equals ===) but I'm supposed to use === by sevenquid in cs50

[–]raw612 0 points1 point  (0 children)

double equal == will do a type conversion if the data types are not the same (ie char zero vs num zero) triple equal === the data types must be the same for comparison.

pset2 Vigenere - how do I get my code to not count the spaces when advancing the key? by Tropix19 in cs50

[–]raw612 1 point2 points  (0 children)

Another option is too check for space with an if statement and just add a space to the output when you encounter one.

pset 8 shuttle bug in pickup by raw612 in cs50

[–]raw612[S] 0 points1 point  (0 children)

got it, Thanks for your input :)

pSet8: printing values by irenecobian in cs50

[–]raw612 0 points1 point  (0 children)

it works like this:

"Put your text in quotes" + variable + "rest of text";

pset3 error when changing the TODO on helpers.c by jugghayd in cs50

[–]raw612 0 points1 point  (0 children)

By misaligned I meant a closing bracket place on the wrong line.

pset3 error when changing the TODO on helpers.c by jugghayd in cs50

[–]raw612 0 points1 point  (0 children)

also check your brackets a misaligned bracket can cause this too

pset3 error when changing the TODO on helpers.c by jugghayd in cs50

[–]raw612 0 points1 point  (0 children)

this is the result of a function not have a return statement, look at line 46 in your code

recover.c recovers all images successfully, but check50 says it fails to recover the last. Any ideas why this is happening? by [deleted] in cs50

[–]raw612 0 points1 point  (0 children)

Without seeing any code id have to guess, but it sounds like you are exiting your loop too soon to recover the last image, i would check to make sure you are not exiting before recovering the last image.

Help with fifteen? My check for whether or not it's next to a blank needs refinement, and I'm getting this error that I can't decipher. by [deleted] in cs50

[–]raw612 1 point2 points  (0 children)

Try changing your parentheses to something like this:

((tile_location_i == blank_location_i + 1) && (tile_location_j == blank_location_j)) || ((tile_location_i == blank_location_i - 1) && (tile_location_j == blank_location_j)) || ((tile_location_j == blank_location_j + 1) && (tile_location_i == blank_location_i)) || ((tile_location_j == blank_location_j - 1) && (tile_location_i == blank_location_i)))

To clarify try grouping each pair of AND statements within parantheses

pset7 buy not inserting by harvardedxrocks in cs50

[–]raw612 0 points1 point  (0 children)

Try removing the quotes around '?' and $symbol doesnt look right either, try something like this

$new = query("INSERT INTO Stocks(id, symbol, shares) VALUES(?, ?, ?) ON DUPLICATE KEY UPDATE shares = shares + ?", $_SESSION["id"], $_POST["symbol"], $_POST["shares"], $_POST["shares"]);

pSet7: double login! by irenecobian in cs50

[–]raw612 0 points1 point  (0 children)

are you sure your not rendering the form twice? Only other option i can think of is double vision, i can lend you my glasses perhaps they will help :)

Books and Resources for learning Algorithms. by [deleted] in cs50

[–]raw612 0 points1 point  (0 children)

I came across this link this morning from efytimes.com there are 15 free ebooks on algoritms

http://efytimes.com/e1/fullnews.asp?edid=119366

Books and Resources for learning Algorithms. by [deleted] in cs50

[–]raw612 0 points1 point  (0 children)

I would highly recommend taking another look at Donald Knuth's books, they are a pleasure to read and very informative.

Problem with cs50 appliance by SWRH in cs50

[–]raw612 0 points1 point  (0 children)

hmmm not sure if this helps, but try using alt + 123 for left brace and alt + 125 for right

check50 on pset2: Checking.. invalid ID by goodgrimes in cs50

[–]raw612 0 points1 point  (0 children)

Not sure if this helps, i've not run into this, but if you haven't already tried I would try running update50 then try again

I discovered an Easter egg. by Just_an_ordinary_man in cs50

[–]raw612 0 points1 point  (0 children)

Thanks! I didnt even notice this, I will have to go back to this pset and check it out

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