Questions tagged [2015]

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1answer
18 views

Returning 2015 student (Starting fresh)

I started cs50 in 2015 on EDX but never really finished it. I would like to start again this year. But not with last year's grades. Is it possible to just resend the psets even though I've already ...
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1answer
29 views

Score kept from 2015 to 2016

I have started cs50 and got through about half the course in 2015. I want to complete it in 2016 so I thought I have to start with assignment 0... However, from what I saw in the gradebook, my score ...
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2answers
219 views

When can I get 2015 CS50 certificate from edX

I get my final project's grade today and all my problem sets are 1.0 grade. So I wonder why there does not have a link to my certificate in edX? When can I get that? Since I pretty much want to use ...
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2answers
70 views

Week 1 - Conditions - error expression result unused (expect ; at end of if else)

Error: expected expression (see photo) It's a very basic program and I'm sure I've made a simple syntax error. There shouldn't be a ";" at the end of the else line and I have included the ; at the ...
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1answer
2k views

Mispellings Questions.txt

I can't really figure out the correct answers for questions 3, 5 and 6 in questions.txt for problem set 5 (Mispellings). 3. Why do you think we pass before and after by reference (instead of by ...
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1answer
865 views

My version of server.c not working

When I use telnet and pass GET /cat.html HTTP/1.1, the server throws four errors all at once. HTTP/1.1 400 Bad Request HTTP/1.1 501 Not Implemented HTTP/1.1 400 Bad Request HTTP/1.1 505 HTTP Version ...
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1answer
150 views

pset5 load function in dictionary,error in valgrind

Good afternoon everyone! I have one problem, new you can see part of load function: node* root = calloc(1, sizeof(node)); node* cursor = calloc(1, sizeof(node)); int amount_of_words = 0; ...
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1answer
75 views

Unable to access problem sets. (Security certificate problem) [duplicate]

Currently using firefox, but chrome also suffers from this problem. I should say I'm not using the appliance, but running other linux version. Anyway, here's what firefox error page prints. cdn....
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1answer
551 views

CS50x 2015 pset5 check50 & submission problem

SITUATION I enrolled in CS50x in late 2014. The class ended on 12/31/2014 and I was not able to finish in time. Enrolled in CS50x3 in 2015 and re-submitting my completed work where appropriate. ...
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2answers
87 views

Mario counter and output problem

I think I have a problem with the syntax of my main loop that counts the number of lines to output. When I set the counter = 1, it prints the correct number of rows but starts at the top with only 1 ...
2
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1answer
163 views

Why use `pause` function if `velocity` could be defined to a smaller value in the first place?

In bounce.c in Problem set 3, why is pause(10) used to slow down the circle when circle's velocity could be defined to a smaller value in the first place? I tried velocity = 0.005 and it seems to be ...
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1answer
127 views

Error while executing `./window` from problem set 3: `java.awt.HeadlessException` [duplicate]

I tried to execute ./window in the /Dropbox/src4m directory and encountered the following error message: jharvard@appliance (~/Dropbox/src4m): make window clang -ggdb3 -O0 -std=c99 -Wall -Werror -o ...
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1answer
107 views

No Dropbox icon

At the end of the set up of Dropbox within the appliance and creation of an account as indicated in Step 4 , -a there was no check box next to " Open my Dropbox folder " button and no Dropbox icon ...
0
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1answer
271 views

What is the correct `wget` URL for breakout (pset 3) for spring 2015?

What is the new URL for pset3's wget? Currently the specification for pset3 has http://cdn.cs50.net/2014/fall/psets/3/pset3/pset3.zip, but this appears to download fifteen and find files.
1
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1answer
151 views

Is CS50x on EdX in 2015 self-paced?

I discovered CS50x on the EdX platform a short while ago and I'd love to take the 2015 round! Although I'm still in school, in 2015 I'll be able to dedicate some time in May or June specifically to ...
2
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3answers
1k views

What date will the 2015 course start? Will it be identical to the 2014 lectures and problem sets?

I am curious to start the course in 2015, and I was curious - as perhaps others are - whether the lectures will still be the same, or whether there will be new videos.