Skip to main content
4 votes

"Error while powering on: Internal error." when starting the appliance in VMware Player

right click on the App. and Run as admin. OR from run type services.msc and run VMware Authorization Service
Remon Abuelezz's user avatar
3 votes
Accepted

Issues with the CS50 IDE

There is definitely a problem with permissions for apache50 in version 59 of ide50. Hopefully, the CS50 folks will fix this in the next version. Meanwhile, the apache50 log files are accessible at /...
hotwebmatter's user avatar
  • 3,050
3 votes

Pset8 Mashup Map Not loading

USE A DIFFERENT BROWSER. I tried using Mozilla instead of chrome to load the page, and it worked wonders for me!
peanutlover's user avatar
2 votes
Accepted

signing in with google plus

Unlike the EDX site, this kind of login does not accept Google login. You can still use your existing EDX account, but you must add a password. To create a password for your existing EDX account, go ...
Blauelf's user avatar
  • 21k
2 votes
Accepted

Best non-cloud9 IDE?

Mac, eh? Xcode and Sublime Text are pretty legit. If that's what you're used to, stick with it. If you want a setup similar to the CS50 IDE, it's easy to run Ubuntu Linux in a VM on your Mac. For ...
hotwebmatter's user avatar
  • 3,050
2 votes

Crack: Segfault on CS50 appliance/ IDE/ CS50.io but fine on my computer

Ok, I've found answer to c segmentation fault on tail recursion: changing clang option -o from 0 to 3 fixes this problem as this enables better optimization: clang -fsanitize=integer -fsanitize=...
J Doe CS50's user avatar
2 votes

Crack: Segfault on CS50 appliance/ IDE/ CS50.io but fine on my computer

if(!offset) offset = 0; does nothing. 0 is the value of false, while anything different could be interpreted as true in many contexts (even if it does not equal true, which is 1). With word[offset=='...
Blauelf's user avatar
  • 21k
2 votes

problems with clickiing in cs50 ide

Ditto! at 11:48 a.m. PST California. This found on cs50 reddit: https://www.reddit.com/r/cs50/comments/4xulet/cs50_ide_updates_in_progress/?ref=share&ref_source=link
Karen Safrit's user avatar
1 vote
Accepted

Editing two similar strings

It happens because a "string" is actually a pointer to a char array that ends in a null terminator, so when you do "s1 = s2" you are simply pointing s2 to the same array as s1. This is covered in the ...
curiouskiwi's user avatar
  • 18.7k
1 vote

(CS50 mario.less)Please point out the mistake in my code.(pset 1)

remember the hashes printed goes online with the value of x..so try connecting the condition of ur third for loop with the value of x...
DD86's user avatar
  • 72
1 vote
Accepted

(CS50 mario.less)Please point out the mistake in my code.(pset 1)

You are printing too many hashes. Have a think about how many hashes you need to print relative to what line number you are on and use this information to create a limit for the for loop that prints ...
Steve Bunting's user avatar
1 vote
Accepted

How can I update the version of php on my cs50 appliance?

You don't need to update it to complete your problem sets. update50 will take care of the necessary updates. If you are done with your problem set. you can download apache, mysql, php7, phpmyadmin to ...
A.Emad's user avatar
  • 176
1 vote
Accepted

Declaration Shadow for 'i', but i don't understand why! Feelin' pretty dumb

I was looking at your code seeing NO errors at all. I had to compile it myself to believe that I was going to get the same error, which I did. I've done this error several times before. And you ...
Ricardo David Antonetti's user avatar
1 vote
Accepted

Setting up clang on ubuntu pc

The C libraries used by CS50 are all included in a default installation (std*.h, string.h, ctype.h and so on), except cs50.h of course, which you can find instructions on how to use and download and ...
kluvin's user avatar
  • 1,223
1 vote
Accepted

problems with initials.c using strgcmp()

while(strcmp(&name[start], " ") == 0) Let's suppose: string name = bob dylan then &name[start] = ob dylan since you do start = 1 this will never be equal to " ", unless you enter two spaces ...
MARS's user avatar
  • 5,179
1 vote

Do I have to use the cs50 appliance?

Even without an edX account, you should be able to create an account at https://c9.io to use the Cloud9 IDE which the CS50 IDE is based on. And you should be able to create CS50-style IDE with a ...
hotwebmatter's user avatar
  • 3,050
1 vote

Stretching appliance in full window

The instructions are here. Does this help?
fwoosh's user avatar
  • 201
1 vote

Stretching appliance in full window

@Kareem answered this in the comments rather than posting a proper Answer that could be accepted, so now this question might never get marked as answered. And that's how you get ZOMBIE QUESTIONS.
hotwebmatter's user avatar
  • 3,050
1 vote

Why can't I import the Appliance OVA into Virtualbox?

For me, the only that worked was right clicking the .ova file and opening with VirtualBox. Not sure why doing an import did not work, I am not a VB expert by any means.
user1889992's user avatar
1 vote

Why can't I import the Appliance OVA into Virtualbox?

I'm currently using a windows 10. I have re-downloaded the virtual machine and it's still displaying this message. Can someone help me with this?
Eric Chen's user avatar
1 vote

Issues with the CS50 IDE

I attended a CS50 workshop this summer and can speak to a couple of these items: The upper, right-hand corner display is now simplified. One quasi-bug was that when your window was not maximized, ...
Peter's user avatar
  • 1,410
1 vote

Handles lack of argv[1]

First just return 1 without printing anything. It shouldn't be like that but check50 expects you to just return 1. What is the k variable?
yousafe007's user avatar
1 vote

what is wrong with scanf in the program written bellow, Why it is not asking for value when input is not an integer?

Wow! Your program has a poisoned logic, I think what you want is to imitate the cs50.h library, however given the pset in which you find yourself is not easy. Let us begin: scanf requires you to ...
MARS's user avatar
  • 5,179
1 vote

pset5 all words misspelled

Is the phrase "Start load" being printed out when you run the program? If not, that should tell you something big.
Cliff B's user avatar
  • 69.1k
1 vote
Accepted

Too much misspelled in pset5 dictionary

There are a number of problems. This will point you in the right direction, but you get to have the fun of implementing the fixes. ;-) First, load() isn't creating a dictionary. Put the following ...
Cliff B's user avatar
  • 69.1k
1 vote

Too much misspelled in pset5 dictionary

I think the word you are loading in memory and and reading for check are not equal. There is probably a difference of deliminator or next line character between both. I had the same issue when i was ...
Muhammad Shahzad Bajwa's user avatar
1 vote

Mess of Error Messages From Clang

You do not need to make the helpers.c file because it is not an executable. It contains functions that will be used by the find program. Once you finish implementing the search and sort, just save ...
Tsundzukani's user avatar

Only top scored, non community-wiki answers of a minimum length are eligible