Questions tagged [spl]
This tag refers to the Stanford Portable Library - not to be confused with other libraries that have the same initials.
36
questions
0
votes
1answer
286 views
How to install SPL libraries on ubuntu?
I was following instructions here https://github.com/cs50/spl
apt-get install -y build-essential git openjdk-7-jdk
git clone git@github.com:cs50/spl.git
cd spl
make
sudo make install
make
gcc -o ...
1
vote
1answer
117 views
SPL question, how to use it in CS50 IDE?
First, this question has nothing to do with any current CS50 problem sets...but its related. Thanks for reading it.
I started CS50 online in 2015, with the appliance. After the breakout problem set,...
0
votes
0answers
31 views
SPL issue. Not rendering [correctly]
I experience some troubles using SPL. I am running Windows 7 Ultimate, I am following CS50 via edx.org. When installing the appliance I followed the instructions for 2014 version(where SPL is pre-...
1
vote
1answer
87 views
What fonts are available using Stanford Portable Library?
Specifically for GLabels.
I would just like to rub it in with some dark, bold text if the player loses.
On the other hand, something celebratory would be in order for breaking out all bricks, right?
0
votes
1answer
45 views
GetWidth error CS 50 breakout
How do I fix this problem?
breakout.c:109:26: error: expected expression
if (getX(ball) + getWidth() >= getWidth(window))
^
/usr/include/spl/generic.h:44:49: note: ...
0
votes
2answers
434 views
Pset3 (breakout) — problems initiating score label
Below is the code I'm using to initiate the label showing the score. Unfortunately, the label doesn't appear on the screen, and I'm clueless as to why that is the case. I'd very much appreciate any ...
-1
votes
1answer
41 views
How do I get spl in usr folder to get my window.c program to work?
I can't figure out how to get spl into usr folder to get my spl to link and display I wrote my own code in Makefile directory but it comes back with error here is the code I wrote:
window2: window2....
0
votes
1answer
90 views
Why is SPL library not be linked
I am trying to run the window.c file I unzipped from src5m. It runs fine but when I copy and paste the code in a new gedit console and try to make it gives me this error message:
window2.c:1:10: ...
1
vote
0answers
97 views
Cannot find lcs : Error when compiling window.c in breakout
I am having issue on using spl library in ubuntu. When I try to compile window.c using make as given in the instructions I am always getting the same error(in pic) even though the spl/include folder ...
1
vote
1answer
198 views
How come we can use objects in a structured programming language like C?
I noticed that data types like GWindow, GOval, etc. are actually classes and we are declaring objects using those eg. GWindow window; and GOval circle;. Here window and circle are objects right? How ...
0
votes
1answer
116 views
why doesn't getColor work?
I have almost all of my PSET3 breakout program complete. I want to add different point values based on the color of the bricks. I have each row colored differently and now when trying to determine ...
0
votes
1answer
205 views
(pset3) breakout initBrick issue
I'm currently trying to instantiate 1 row of bricks before moving on to 5. Before implementing the for loop I made sure I could instantiate 1 brick on the screen, exactly where i want it. No problem ...
2
votes
0answers
56 views
Why am I getting linking errors when trying to make a program that uses the SPL? [duplicate]
Why is it, whenever he uses "make" to generate the program, it works flawlessly; but when I do the same, I always receive linking errors?
make text
clang -ggdb3 -O0 -std=c99 -Wall -Werror text.c -...
1
vote
1answer
113 views
Why does setLabel() freeze the program randomly?
I have a decent implementation of the Breakout program that normally runs perfectly all the way through. I have noticed, however, that occasionally the program will freeze. After a joint effort of ...
0
votes
0answers
86 views
Cannot access SPL include files
My appliance cannot access the SPL library. I have executed update50 but no "/usr/include/spl" directory exists on my appliance. Is there something else I need to do to access the SPL library?
0
votes
1answer
462 views
pset3 - Error: Could not find or load main class stanford.spl.JavaBackEnd
Before you shout at me, I know this is a duplicate (Why do I get Error: Could not find or load main class stanford.spl.JavaBackEnd?) but that article did not help solve my problem. I ran
sudo chown ...
1
vote
2answers
1k views
Fatal error “spl/gwindow.h”
I followed the instructions in pset3 but received a fatal error shown below. It was stated that the spl is stored somewhere in the new version of appliance which I think I have. I tried replacing ...
0
votes
3answers
1k views
How to install SPL libraries in ubuntu?
I tried https://github.com/cs50/spl
Even got little success, but it's not working properly and keeps throwing me this error...
/**
* bounce.c
*
* David J. Malan
* malan@harvard.edu
*
* ...
5
votes
1answer
2k views
How to install and compile the Stanford Portable Library on windows?
Self-explonatory title, I can't install the appliance for some reasons - Google just left me pretty confused - I would like to use the Stanford Portable Libray in a windows enviroment.
I am using ...
0
votes
1answer
150 views
correct use of getColor from SPL/gobjects.h
To get myself started with Breakout I've been trying to create a simple program that, upon the click of a button, will change the color of a filled circle from black to yellow, and vice versa.
My ...
1
vote
1answer
530 views
Program failing to compile. Please see code below. Not a p-set problem [duplicate]
I have spent days trying to understand what went wrong, but there is no answer to this on Stack Exchange or the web. The problem below comes from the first video walk-through in week 4 of CS50x, from ...
0
votes
1answer
164 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 ...
0
votes
1answer
687 views
What's causing the “'spl/gevents.h' file not found” error when compiling `breakout`?
After executing the command make breakout I'm getting this error:
breakout.c:16:10: fatal error: 'spl/gevents.h' file not found
#include <spl/gevents.h>
I'm using Appliance version 19.
0
votes
0answers
66 views
Couldn't exec spl.jar
This is the problem i cant execute the spl.jar file i already tried installing java jdk but it yet didn't work.
1
vote
1answer
461 views
Why do my SPL example programs fail to compile?
When I rewrite pset3's programs associated with Stanford Portable Library (SPL) on my own, they always fail to compile even though I write them out exactly the same as the original program. For ...
1
vote
0answers
46 views
Why redefining `bool` primitives in 'SPL' as a typedef (rather than using stdbool.h)?
While reading through files included in /spl library (Stanford Portable Code), downloaded with pset4.zip distro, I came across this definitions in cslib.h:
/*
* Type: bool
* ----------
* This type ...
0
votes
0answers
68 views
Play sounds using the SPL
I would like to include sounds in the game Breakout. I tried a simple test to get a sound file to play with the following code:
...
#include "sound.h"
int main(void)
{
Sound paddle_sound = ...
0
votes
0answers
879 views
Breakout: Missing spl folder
Problem Set 3: https://d2o9nyf4hwsci4.cloudfront.net/2014/fall/psets/3/pset3/pset3.html (Section "Breaking Out", after "Backstory")
Hello. I tried to do make window (for window.c) on the terminal and ...
0
votes
1answer
162 views
error could not exec spl.jar
When I run ./windows I get "error could not exec spl.jar".
What to do about it?
In 19 version of appliance this worked now it is not working (2014).
I have googled but couldn't come across answer.
It ...
0
votes
1answer
151 views
Week 5 Walkthroughs
I am trying to get Button.c to work, which is the first of the Walkthroughs from Week 5. I transferred the spl folder to my current directory, altered the Makefile from Breakout so it is working on ...
0
votes
1answer
450 views
Compilation error when using #include “gwindow”
When compiling a game program I keep getting an "unable to find" error directed to the Stanford Portable Library (#include gwindow). I have tried unzipping all files in pset4, searched Google and ...
0
votes
0answers
1k views
How do I link the Stanford Portable Library (SPL) to a program?
I was on the walkthroughs of week 5 and I wanted to do the programs mentioned for practice with GButton, GCheckbox and so on. On the header files there is the #include gevents.h gobjects.h and so on, ...
2
votes
1answer
84 views
Stanford library is missing GRectangle and getBounds
I'm doing pset4 which uses the Stanford Portable Library. David mentioned the documentation is buggy but it appears wrong in some parts. In particular there is a type GRectangle and the method ...
4
votes
4answers
1k views
Running breakout on Mac OS X
There's a similar question about running breakout on Linux variants: Can't run Breakout outside of appliance
My question is specifically about compiling breakout (and hence SPL) on Mac OS X.
So ...
1
vote
2answers
674 views
Can't run Breakout outside of appliance
I have just finished implementing Breakout, and tried running it outside of the appliance in my Debian machine, but i get the following error, even though it's the same directory that's shared between ...
1
vote
2answers
342 views
PSET 4(breakout) : Paddle goes out of window
When i try code for moving paddle
setting location x = getX(event) -getWidth(paddle)/2;
but with this a part of my paddle goes out of window. What should i do ?
