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6 votes

Understanding how memory is allocated in driver code PSET 4, Filter (Less Comfortable)?

RGBTRIPLE(*image)[width] means variable image is a pointer to an array of length width of RGBTRIPLE. RGBTRIPLE *image[width] means variable image is an array of width pointers to RGBTRIPLE. The ...
Blauelf's user avatar
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3 votes
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Why can't I print the entire string from the read file?

I guess you meant print(dna[i:i+len("AGATC")]). In Python, if the end of the substring is before the beginning, the substring is empty, so you are printing a bunch of empty strings.
Blauelf's user avatar
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3 votes
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python invalid syntax end=""

I added a space in there and it took the flag away. The rest of the print lines without the space are not flag. I'm wondering if this is a bug with the IDE or am I not understanding something? This ...
Adam's user avatar
  • 41
2 votes

MARIO LESS COMFORTABLE

Using the 5 pyramid as a guide: Height: 5          ##        ###      ####  &...
DinoCoderSaurus's user avatar
2 votes

Understanding how memory is allocated in driver code PSET 4, Filter (Less Comfortable)?

What are the parentheses doing? As Blauelf explained, they are changing order of operations. I didn't full grasp why this was needed though until trying to compile without them. filter.c:78:15: ...
drl's user avatar
  • 81
1 vote

Why is my code not compiling (simple get_int example)?

So in fact you didn't copy his code, you tried retyping it and made errors in the translation. Let's straighten up some terminology: parenthesis = ( and ) braces = { and } brackets = [ and ] For ...
UpAndAdam's user avatar
  • 1,311
1 vote

Could someone explain to me how curly braces work?

Curly braces help define scopes (range of allowed operation) for variables and statements in C and some other languages. They also help in defining coding styles. The CS50 course uses a particular ...
EddyBeor's user avatar
1 vote

Syntax Highlighting Error

Just a guess, did you open a new file that has yet to be named or saved? Assuming you're in the CS50 IDE, are you writing your code in a file with the .c extension? The IDE has to see that extension ...
Cliff B's user avatar
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1 vote
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cs50 pset7 buy syntax error

I would expect you to have an autoincrementing id field that is the primary key (so each transaction has an id) and then a user_id field that holds the user_id for the transaction (that is not unique)....
curiouskiwi's user avatar
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1 vote
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PSET 6: Caesar.py - stuck on "SyntaxError: invalid syntax"

It is as easy as replacing else with elif, in python a condition is not allowed after an else, remember that else is executed if the if condition is not fulfilled, if we want to impose a new condition ...
MARS's user avatar
  • 5,169
1 vote
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The syntax "<%- place_name %>" in pset8

This is the template syntax used by the Underscore.js JavaScript library. There's a link to the full documentation in the Problem Specification. You may also wish to pay special attention to this ...
hotwebmatter's user avatar
  • 3,050
1 vote
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What's is wrong with this php code

echo("</tr>") not properly terminated.
DinoCoderSaurus's user avatar

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