programming-exercises | Programming Exercises about Interesting Topics | Math library
kandi X-RAY | programming-exercises Summary
kandi X-RAY | programming-exercises Summary
Programming Exercises about Interesting Topics
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Learn the given text
- Add all the words in text
- Find the index of the given word in the source text
- Add the next word to the list
- Update the object
- Updates the x and y positions
- Apply a filter to an image
- Computes the Levenshtein distance between strings
- Generate a heightmap of the heightmap
- Generate a train matrix
- Run n words
- Linear regression
- Calculates the least squares regression
- Evaluate the function
programming-exercises Key Features
programming-exercises Examples and Code Snippets
jshell> 60 * 24
$1 ==> 1440
$jshell>60 * 60 * 24
$1 ==> 86400
jshell> 60 * 24
$1 ==> 1440
$jshell>60 * 60 * 24
$1 ==> 86400
Community Discussions
Trending Discussions on programming-exercises
QUESTION
How would one replace every instance of a given string in a text file in a simple C program ?
One would think this is a question easily Googled, yes ?
At the time of asking,SanFoundry, TutorialsPoint, GeeksforGeeks, w3resource, Codeforwin, a blog, GeeksforGeeks (twice) and even Code Review SE have badly broken posts that will likely give dysfunctional code to desperate people on deadlines. These are unacceptably bad answers, except maybe the C.R. SE, which addresses its limitations clearly.
This had to thus be addressed in Q&A format on a reliable platform, like Stack Overflow.
...ANSWER
Answered 2020-Aug-26 at 05:49This Q&A was made to save future C beginners/intermediates from the nonsense that comes up when searching how to do this.
If you are a beginner, read the algorithm and try implementing it yourself rather than just copying the code.
Disclaimer : This algorithm will replace sand
in sandwich
. My second answer mitigates this, if this is an undesirable effect (depending on your circumstance).
Algorithm/Steps :
- Remind user to backup their file.
- Get fileame.
- Initialise : Open file entered by user for reading, Open temp file for writing, test for any errors in these file openings.If successful, get the target string and its replacement.
- Parse : Go through the file and record the number of lines in it, then
rewind()
the fptr. - Loop 1: Staying within the number of lines, get one line from the file.
- If: Using
strstr()
, determine if line contains target string. If yes , then begin Loop 2. - Loop 2: While any instances of target string are found in line, write to tmp
a)
all characters of line till last match, andb)
the word to replace. Move the reference of last match to location of current match + length of target string. - Before next line: Once one iteration of Loop 2 is finished, write any/all characters from last match till
EOL
. Move to next iteration of Loop 1. - Else: If at
5
, it is found that line contains no instance of target string, write it to file directly. - Cleanup:
fclose()
tmp and original file.Check iffclose(tmp)
was successful- if not, throw an error and remove temp file, and finish(since this likely indicates that tmp was not written to as expected, for example if disk became full). Elserename()
tmp file to filename of original, if that fails(as in Windows systems, where file cannot be renamed to already existing filename),remove()
original and try again, if even that fails, throw an error and give up. - End: (optional) print a 'success' message to user if nothing failed.
Code :
QUESTION
Actually right now i am learning c and doing an excercise of looping and got messed up in a question.
my code is:
...ANSWER
Answered 2020-May-27 at 12:51as i can see, you have small errors which you need to fix ,
first is, int i,j,k,spc,k;
, here, 'k' is written twice, next is scanf("%d",&rows);
but, rows
is not declared anywhere, in this line,for(j=1;j<=i:j++)
, you missed a semicolon and added colon instead, so replace it with for(j=1;j<=i;j++)
and the last one is, printf("\n")
,in this line, you missed a semicolon! and for the desired output, you just need to add a space in printf("*");
,i.e, printf("* ");
.Thats it.
QUESTION
I am trying to evaluate how this nested For loop works. Can someone explain to me how the values for i and j increase and behave with each iteration with respect to x and y inputs? Using x = 3 and y = 5, how does it compile?
...ANSWER
Answered 2020-Feb-07 at 06:39Best way to see the process is to modify your code
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install programming-exercises
You can use programming-exercises like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page