Questions tagged [pset0]

The "Scratch" problem set assigned at the beginning of the course.

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1answer
13 views

Timer does not pause

in scratch my timer is not pausing when red hexagonal icon next to the flag is press. Can anyone tell me what the problem could be?
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1answer
16 views

How to move sprite in random positions?

Is anyone still working on problem set 0 ? I am unable to move my sprite in random positions, can anyone help me with codes ?
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1answer
30 views

PSet0 Switch Costume Bug? or Code error

I trying to design an game which works somewhat like a rubix cube. In my app if the A key is pressed the squares in the top row are supposed to move from right to left. So the square in the top right ...
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1answer
35 views

Problems with “when color touches color”

I am currently trying to create a guessing game in Scratch that will play a soundtrack from the game Dark Souls, and you will get two choices (doors) of which boss the music is from. I want it to work ...
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1answer
27 views

Trying to submit pset0 and after logging in I get redirected to a blank page

When I click the submit form link (https://forms.cs50.net/2017/x/psets/0) I get redirected to the edx page, and after logging in I get redirected to this: about:blank.
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2answers
38 views

Where is the URL of my Scratch program?

I've "shared" the program. But when it's launched, the only URL I see is the generic scratch.mit.edu in the address bar. Where should I be looking for the URL asked for in the set 0 questionnaire? ...
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1answer
38 views

Touching event isn't going off, when sprites touch

I am pretty new to Scratch so please pardon my naive code. This is my project for problem set 0. Princess What should be happening is that when the dragon sprite touches the princess sprite, the ...
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3answers
42 views

week0-shorts-threads-example

Am getting an inverted fish after gliding towards one end. Though I used the same code. Kindly get back to me.
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1answer
39 views

Looping and calling items in a list

Say, a list containing 5 elements as 1. Apple 2. Banana 3. Cat 4. Dog 5. Elephant Now how do I call (say) each item in a "LOOP" one after another. Eg. { apple(item1) for 2 sec banana(...
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1answer
53 views

http://scratch.mit.edu/ fails to open for me to upload my problem set 0 for the past 4 days

http://scratch.mit.edu/ fails to open for me to upload my problem set 0 for the past 4 days. I had been able to access it before & even registered. It fails on my smart phone & other browser ...
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1answer
114 views

scratch submission issue

1.the "download to computer" (in file menu) of scratch does not do anything when I click on it... 2.so I just went to the file option in the safari menu bar and clicked on save as 3.then I get a box ...
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1answer
63 views

I have some questions with Scratch.(I am a beginner)

I have some questions now, I don't know how it works. please teach me these knowledge if you know it, thanks a lot. this is my first project, I have some questions. question: I want to let Tera have ...
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1answer
70 views

pset0 - Scratch - Problem with sprite turning right

In short The sheep won't turn right. You can see the project here. (screenshot at the bottom) https://scratch.mit.edu/projects/75999804/#editor Longer Story I went slightly beyond the scope of ...
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1answer
72 views

Uploading to http://cs50.edx.org/2015/psets/

hey guys trying to upload files to http://cs50.edx.org/2015/psets/0/ but cannot login .. I logged into edx with my google account and i am having problems.. any ideas ?
2
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1answer
95 views

Who I can connect if my problem set 0 haven't been graded?

I have submitted 6 problem set from 0-5, but only the problem set 0 haven't been graded. Who should I contact to inform the ungraded problem set?
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2answers
89 views

Debugging Scratch

My code was working fine with the first two sprites introduced and then it stopped working after I made it more complicated. The goal of the game is shoot 100 balloons with the arrow by clicking on ...
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1answer
99 views

Can't see images for questions in pset0 submission

I submitted problem set 0, but had problems with the images that inform the additional questions we need to answer. This meant I had to guess 3 of the 10 questions on this page. They wouldn't appear ...
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2answers
64 views

Where can I find instructions for using the Appliance

Most everything is well; presented, however the Appliance is presented mainly during the lecture where the camera focus is on Malan; the display behind him is so out of focus that many characters ...
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1answer
23 views

Complex Scratch Scrips

Just started this course and am working on the problem set. I have found that there are a lot of things that I'd like to do but have never been able to find the right blocks. For example, I want to ...
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1answer
50 views

Problem set 0 submission [closed]

Is my problem set 0 is correct and graded? I don't see any grades here (https://i.stack.imgur.com/pzGoP.jpg).
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1answer
96 views

pset 0 submission locked - can I resubmit?

I joined cs50 this week and completed the pset0 assignment. I went to submit and fill out the week 0 survey. I closed the window and now cannot go back. If I try to resubmit I get the following ...
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1answer
226 views

Pset0 - Check50 returns no results

I submitted pset0 this morning and check50 is returning: Submit50 MurilloGuindani Cs50/2018/x/scratch There are no results to display. My account is linked but the courses section displays: "Not ...
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3answers
149 views

Help with implementing collisions and gravity in Scratch

I am fairly new to programming & only have extremely novice experience using Python (which was even more basic than what I can do in Scratch). I have been trying to make a 2 player volleyball ...
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2answers
116 views

Scratch Pset0 Not Graded

I have submitted Psets 0 - 4 and have received my grades for all of them except Pset 0. It's been a few months and my Scratch project still has not been marked. I've been checking my gradebook quite ...
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1answer
123 views

pset0 scratch how to pause the game

I made my game on scratch but I'm having a few problems. One of them if that I couldn't make work the pause/play by pressing P. Also, I think the ball is not bouncing as it should when hitting the ...
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1answer
121 views

How to spawn sprite on random edge axes

In Scratch, how do I spawn a sprite randomly at any point along any of the four edges of the stage? I have tried using a go to motion block with a pick random operator, but of course this limits the ...
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1answer
180 views

Will i get scores after submitting pset0 scratch project?

I have already submitted the scratch project for cs50 pset0. For other psets i have got scores in the gradebook but for scratch there are no scores , just three dashes ---. Is this generally the case ...
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1answer
147 views

Not seeing scores after submitting a while ago, what's wrong?

I submitted pset0 and pset1 about a month ago and still no scores. Is this normal or is something wrong?
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2answers
157 views

How do I submit pset0 using cs50 ide (edx course, 2017), or there is another way?

I've submitted psets 1 to 8 through submit50 on the cs50 ide. Now I want to submit pset0 (the Scratch Project). How can I do so?. I'm using the edx cs50 ide of the 2017 course.
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1answer
18 views

Why does sound begin playing when app launched?

I'm late to the party I know but I'm a retired programmer and I plan to catch up quickly. I've used Scratch to teach Hour of Code and I'm basically familiar with it.But my project is currently ...
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1answer
115 views

Bug in game of scratch

I have a running project https://scratch.mit.edu/projects/71129428/ the problem is the fish in it stuck sometime and scores keep increase. I was thinking of an idea that i may need to apply id to ...
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1answer
49 views

Definition of a script

From the instructions for problem set 0: Your project must have at least three scripts total (i.e., not necessarily three per sprite). I have chosen to interpret script as entries starting with ...
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1answer
29 views

Greedy outputting 0 or 102394023940

I thought I wrote code that would work for greedy in pset1, but every time I run the program, it either outputs 0 or some super large number. What is the problem? #include<stdio.h> #include<...
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1answer
58 views

PSET0 Question - Scratch Help. How can I get a sprite to bounce around aimlessly inside of a maze?

I'm having trouble getting a mouse to bounce around aimlessly inside of a maze. I created a maze sprite, and I have the mouse constantly moving in the pointed direction at 3 steps. However, while ...
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1answer
96 views

PS0, hexadecimal meaning

I don't understant the third question in PS0: How do you represent the (decimal) integer 50 in, oh, "hexadecimal," otherwise known as "base-16"? Know that decimal is considered "base-10" (since it ...
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1answer
109 views

how to answer problem sets

I am an online student of CS50.This my first experience as an online student. I have no idea how to attempt the problem set. Am I supposed to write it in MS Word or in some other text editor? Should I ...
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1answer
440 views

Where can i see my pset0 grades?

It has been 3 days now after I submitted pset0. I received an email that I have successfully submitted pset0, but where could I confirm it o edx and when would I receive my grades? And an I submit ...
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1answer
664 views

Where to submit Problem set 0 assignments

So far i have attended week 0 and week 1 lectures online. For week 0 have created a game in [scratch] (http://scratch.mit.edu/) site. Currently i am doing week 1 or problem set 0 assignments. ...
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3answers
48 views

Pset0 - trying to upload a sound

One of the parts of Pset0 is to attach a sound. I found the turkey sound I want but scratch is not recognizing format. Any suggestions?
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1answer
59 views

pset0 - sprite movement problems

I'm new to Scratch and have some problems with movement of sprites. When the sprites move horizontally, it works well. But, when I try moving them diagonally, it warks only sometimes. Here's my ...
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1answer
52 views

pset0 how to hide or delete object in Scratch

I'm re-generating a fish object in forever loop, i want to work it as if i sense touch to the fish it should disappear / delete while the original fish keep on generating fishes. Everything is going ...
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1answer
66 views

SCRATCH: motions stopped working even after no codes were changed

i have a lioness sprite that after clicking her used to turn 90 degrees to the left - glide northwest - then back 90 degrees to the right - now she just glides to the left without turning - i also ...
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1answer
19 views

In Scratch “point towards mose pointer” works only when its open in editor

when I click on "see inside"(when editor is open) of the project then only above mentioned operation executes else the respective scratch remains standstill. What can I do to make it work on project ...
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2answers
139 views

What does it mean “Your project must have at least three scripts total”?

What does it mean "Your project must have at least three scripts total"? Does it mean three structure of "When GREEN_FLAG clicked and so on..."?
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0answers
75 views

Walkthrough cat/bird in Scratch

I duplicated the walkthrough where the cat chases the bird, but it does something completely different. The cat never catches the bird and keeps a set distance. Whenever the cat goes near, it suddenly ...
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1answer
279 views

How does the grading system work?

I submitted Pset 0 and got a 1 on the far right of the Gradebook. I'm assuming that's not very good. I was wondering how the grading scale worked and if we would get feedback on the Psets.
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1answer
130 views

Do we receive feedback for our Psets?

I just submitted Pset0 and wanted to know if I am going to receive grading/feedback/answers soon, or until after the deadline. Thank you
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0answers
24 views

Code Posting for all problem sets

Can I submit my code as a turbo c file or its converted notepad file ? There's some problem with the software installation at my side. Please let me know at the earliest !!
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1answer
44 views

Why can I not see the images in `pset0`? [closed]

Why can I not see the images on pset0? I am using Safari - is this the problem? I ended up just answering with option A for all of them.
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1answer
38 views

Does anyone know why I was unable to see the images from problem set 0?

I was working on problem set 0 and I noticed that the images for the questions were not being displayed. Unfortunately I have submitted the problem set without answering those questions. Does anyone ...