Questions tagged [2019]

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2019-2020 final project submited

I've started CS50 in 2019 and I've bought the certificat (In case I'll pass it :) ). I'm in this case: If you submitted Problem Sets 0 – 4 last year, resume your studies with Problem Set 3 in Week 3 ...
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1answer
146 views

PSet2 doesn't match with Gradebook

I started the course on the 7th of January of 2020. I've done PSet0 and PSet1 with no problem. Now I'm in the middle of PSet2. I've done Caesar and submitted it. It appears in my Gradebook. Now I've ...
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1answer
33 views

CS50 Resize(less comfortable) I can't create OUTFILE

I've been working on this pset for quite a few days now, but my program doesn't seem to be compiling. It keeps saying "could not create outfile"(my message). I have no idea what to do. Any help would ...
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1answer
141 views

CS50 pset3 recover

After running it, I got the error massage "double free or corruption (top) Aborted". And I only got 000.jpg. Need some advice, thanks. int main(int argc, char *argv[]) { //ensure proper usage ...
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93 views

pset5 submit50 slug

Hi, guys. I am facing this problem you can see on the uploaded picture. Cheers!
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1answer
27 views

How to Map from 2018 to 2019

It is not clear to me how 2018 problem sets are mapped to 2019 ones. I have successfully completed 2018 problem sets 0 - 3 and two of the three required for problem set 4. Do I complete one of the ...
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94 views

Pset8 Finance - Sell - Fails to update user's cash in “users” table, and fails to insert sold shares into “portfolio” table

Big picture: On the sell page of the CS50 Finance, I select the shares symbol I want to sell, and enter the number of shares, and click the Sell button, which redirects me to the homepage, but the ...
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2answers
897 views

Resize ( more comfortable )

int main int argc, char *argv[]) { // ensure proper usage if (argc != 4) { fprintf(stderr, "Usage: copy infile outfile\n"); return 1; } float f = atof(argv[1]); if(f<= 0.0 && f>=...
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1answer
144 views

pset7 survey - for loop to give alerts not working properly, why not?

I can't figure out what's wrong with my for loop, written in Javascript. It isn't functioning as needed. 1- It only sometimes gives the javascript alert message saying "Please make sure you have ...
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2answers
46 views

How can I have two pset4's ; one from 2018 and one from 2019?

I had completed up to and including pset4 in 2018, and upon resuming in 2019 I was required to resume with the new pset4. How can I have 2 pset4's in the same workspace? For now, I named the 2019 pset ...
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1answer
189 views

Resize(less) How to store triple into an array?

I have been struggling with resize (less). I can't seem to make sense of how to put the value of triple that is being read into an array (rewrite method) Any help will be appreciated // iterate over ...
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1answer
375 views

Resize (more comfortable) - Code does not pass last 3 check50 test (shrinking by 0.5)

For the 2019 version of Resize (more comfortable), my code is able to pass all but the final three tests: :( resizes 6x6-pixel BMP to 3x3 correctly when f is 0.5 expected exit code 0, not 1 :( ...