Questions tagged [pset2-caesar]
The pset2-caesar tag has no usage guidance.
78
questions
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PSET2 Caesar help - Rotate function
I have been getting the error message "expected identifier" for line 65 of my code pointing to the isupper function below. I can't see what I am doing wrong and any help would be appreciated ...
- 5
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1
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83
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pset2 - caesar : output is providing extra symbols after specific input cases
If someone has the time to explain to me how I can fix my code that would be greatly appreciated! Thanks :)
Problems that I need help with:
1 - Program needs to accept single character inputs like 'a' ...
- 5
0
votes
1
answer
381
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Pset 2 Caesar - only digits function not outputting properly
This is my first post and I wanted to say thanks to everyone who has already answered this for others and is contributing/helping us noobs out. I really appreciate having the ability to go through ...
- 3
0
votes
1
answer
206
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pset 2 Segmentation fault (core dumped)
Here is my program caesar, pset 2. I don't know where it is going wrong. whenever I run it with input, Segmentation fault (core dumped) error appears on terminal. how to fix this?
#include <stdio.h&...
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0
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394
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How do you call a boolean function in main?
In problem set two it asks to use a separate function outside of main to determine if the string argv[1] has digits. I believe I've done this correctly in that function, but I'm struggling to call it ...
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1
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61
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encrypts "a" as "b" using 1 as key output not valid ASCII text
I have been trying to figure out what the issue is in my Caesar code.
When I run check50, I see 2 errors -
encrypts "a" as "b" using 1 as key output not valid ASCII text
&
...
0
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1
answer
407
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How to solve "error: expected expression" while doing Caesar.c
I'm trying to solve Caesar but i keep getting this error:
caesar.c:37:20: error: expected expression
s[i] = char(int(text[i]+k-97)%26+97); \\ the arrow points to the 'c' in char
#include <ctype.h&...
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1
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874
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Stuck on PSet 2 Caesar - Checking the Key Step
I'm working through PSet 2: Caesar, and I'm stuck on the step called "Checking the key". The instructions read as follow:
Checking the Key
Now that your program is (hopefully!) accepting ...
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1
answer
29
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How do I assign a variable to all possible values of another variable?
I hope my question was worded right but I'm trying to solved pset2 caesar and i don't understand how to print something only if all the possible values of a variable fit the condition. If I input &...
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1
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36
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I'm getting segmentation error when I'm trying to rotate each character of the plaintext by 1. Please help
Here I'm posting a picture of the segment in which I am trying to rotate each character of the plaintext by 1 before proceeding to higher values of key.
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335
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I believe my code is right but it's not giving output and pops segmentation fault
This is my code for Caesar Pset2. The code must be doing right but it's broken somehow.
#include <stdio.h>
#include <math.h>
#include <string.h>
#include <ctype.h>
#include <...
0
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1
answer
625
views
incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int'
I keep getting this error when I try to compile my program: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int'
{
if (argc != 2)
{
printf(&...
- 3
0
votes
1
answer
56
views
Can't check CAESAR pset2
I solved the Caesar problem and it works flawlessly. But I can not check it properly. The results are correct but
'''
check50 cs50/problems/2021/x/caesar
'''
says it is incorrect. If I view the ...
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1
answer
29
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Undeclared identifier error inCS50 Pset2 caeser
I keep getting 2 undeclared identifier errors on these respective lines
line 48: printf("ciphertext:%c", ((p[n] - 65 + k) % 26) + 65);
line 54: printf("ciphertext:%c", ((p[n] - 65 +...
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1
answer
46
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PSET2 Getting segmentation error
Hello so I am doing PSET 2 Caesar and I tried to write a function to tell me if argv[1] is not a integer I want it to print the error message from the assignment. The problem is I'm very new with ...
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1
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30
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Caesar scoping. variable len not defined, yet it works
The code is following:
#include <stdio.h>
#include <cs50.h>
#include <math.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
bool key_validity(string s)...
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0
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1
answer
27
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Program compiles and produces required output in caesar from CS50 but segmentation fault due to lack of memory. What to do next?
My program compiles and produces the required ciphertext in caesar problem but when the input has too many characters, I get a segmentation fault after a specific number of ciphertext characters are ...
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1
answer
92
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I'm stuck at PSet 2 Caesar Cipher: The alphabets don't follow my modulo 26. It goes beyond it, printing non-alphabetic characters
The crux is at the last part where I've commented "CONVERT PLAINTEXT TO CIPHERTEXT"
The variable asciiValue holds the, well, the asciiValue of the enciphered character. As you can see, I've ...
0
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1
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46
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How to print the output in Caesar(Pset2)?
here's my code
#include <stdio.h>
#include <cs50.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
int main(int argc, string argv[])
{
// prints Usage : ...
-1
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1
answer
29
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Can't get PSET2 Caesar to compile
I'm having trouble getting my version of Caesar to compile. It keeps saying:
error: use of undeclared identifier 'n'
for (int i = 0; n = strlen(unencrypted); i < n; i++)
I thought maybe I was ...
1
vote
1
answer
53
views
Segmentation Fault while running caesar
I am facing a small problem while solving caesar (PSET2).
I can make caesar but when I execute the program and provide a numerical command-line argument, I get back: Segmentation Fault, and the ...
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1
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44
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Pset 2 - Caesar - segmentation fault when input is null
I recently started cs50 and I finished caesar after great difficulty. Everything is working when I run check50 except there is a segmentation error when the input is null. I did search a few forums ...
0
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1
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52
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Errors in Caesar pset2 and Wrong Output
I am almost finished with Caesar only a couple of issues persist which I am unable to overcome
Here is my code -
#include <stdio.h>
#include <cs50.h>
#include <stdlib.h>
#include <...
- 156
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2
answers
128
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Caesar pset2 How to Reprompt user for Command Line Argument?
I have started working on Caesar and I am stuck with how to repromt user for a command line argument incase they input some wrong values.
Here is the code i wrote and I can't find any apparent errors
#...
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0
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1
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42
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pset2 mathematical IF statement : attempt
#include <stdio.h>
#include <string.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <ctype.h>
#include <cs50.h>
int main ( int argc, ...
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0
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2
answers
37
views
What's wrong with my code? Pset2 caesar (check)
So my code is working, but when I check, this error appears on all criphertexts.
string plaintext = get_string("plaintext: ");
printf("criphertext: ");
for (int i = 0, len = ...
1
vote
1
answer
383
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cs50 problemset 2 caeser check50 command gives me this error : 'You seem to be missing these required files: caesar.c'
This error keeps appearing although I'm opening the correct directory!
enter code here ~/ $ cd ~/pset2/caeser
List item
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1
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1
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948
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:( handles lack of key or argv[1] failed to execute program due to segmentation fault
#include <stdio.h>
#include <cs50.h>
#include <string.h>
#include <ctype.h>
#include <math.h>
#include <stdlib.h>
int main(int argc, string ...
0
votes
1
answer
36
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i m getting segmentation fault in my code for cs50 caesar
#include <stdio.h>
#include <cs50.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
int main(int argc, string argv[])
{
//getting correct input for KEY
...
0
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2
answers
59
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Question on Pset2 Caeser
I am a beginner to coding and a rising ninth grader. This is my code on the bottom and I ran check50 on it and everything was green but, I'm not sure if the code would be consider as "right" ...
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1
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32
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validating command line argument
I'm doing caesar in pset 2 and it's working well when i enter ./caesar 1, or ./caesar a, or ./caesar 1 2, but when i try ./caesar 2h, it still runs the program. A couple of other people asked this ...
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3
answers
160
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Why So Many Check50 Errors on Caesar? Results match expected output
Of the 11 Check50 checks, only 4 check out correct but when I run the code with the Check50 inputs, my outputs match the expected outputs, so why so many errors?
Here is a link to my Check50 results:
...
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1
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716
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Caesar Pset2 Handles non-numeric key :(
I am tearing my hair out on this exercise. I cannot get it to pass a non-numeric key. I've played around with the code for 2 weeks now. I can either get it to handle a numeric key or handle a lack of ...
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2
answers
81
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PSet2 Caesar - User Defined Function Issue
I'm a newbie with what seems to be a syntax issue in my user defined function.
Currently my code --and the error is the following:
...the problem seems to be the semicolon at the end of line 39.
But ...
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2
answers
77
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pset 2 caesar -- bug that specifically lowercase letters with key more than 52 don't work -- everything else does
// ciphering
for (int i = 0, n = strlen(plaintext); i < n; i++)
{
...
// lowercase
if (plaintext[i] > '`' && plaintext[i] < '{')
{
if (...
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2
answers
122
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How to invoke command line argument functions outside of main? caesar.c
Let us say I want to create a separate function for lines 11-25 (check comment for reference) in my code as a separate "argument checker" function. Something similar to how I have my decrypt ...
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1
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59
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Getting a segmentation fault when testing my code. I want to make sure the user is typing a correct input e.g. ./caesar 2 and not ./ caesar a
Trying to generate loop to check for alphabetical inputs in the user command argument.
But i get a segmentation fault when testing it.
error outcome.
~/Week_2/pset2/ $ ./caesar a
Segmentation fault
...
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0
votes
1
answer
41
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Testing code to validate input using a parenthesis for cs50/pset 2/caesar.c I get error bash: syntax error near unexpected token `)'
Been struggling with this all morning and grateful for any help please!
I'm aware that it's not the most elegant code but below weems to work OK with most invalid input that I've thrown at it so far, ...
0
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1
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37
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Pset2 Caesar Memory Leak
I can't detect where I am leaking memory. Sometimes I get an unexpected output at the end of my array for cypher text and can't pass all test cases :(. Can someone point to me where I am wrong? Can ...
0
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1
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175
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Caesar problem: Validating keys
I don't really know what went wrong here.
I'm trying to test if the second word of the command line contain all digit. So I tried to check every character in argv[1] with the isdigit function by ...
- 101
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1
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89
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Pset 2 caesar handles non-numeric key fail
Everything else in my program seems to run smoothly but I always get the problem of ":( Handles non-numeric key" but when I switch the atoi function with an isdigit function, it passes the handles non ...
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3
answers
571
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I'm getting an for error expected expression. What exactly I'm I doing wrong?
I mainly want my else statement to work, but it's not working.
int main(int argc, string argv[])
{
if (argc != 2)
{
printf("Usage: ./caesar key\n");
}
else if (argc == 2)
{
for (int i = ...
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1
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626
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I have the error of :( handles non numeric key - timed out while waiting for program to exit in Problem Set 2 Caesar
I have the error occured. May I know wheres the issue & where to add or remove the code? I'm new to the this. Thank You in advanced.
#include <stdio.h>
#include <stdlib.h>
#include &...
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0
answers
34
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caesa cypherr cs50 pset2
I am having some issues with my code, clang continues to say use of a undeclared identifier when I have identified the variable that I would like to use. Can some one help me with this issue. My code ...
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1
answer
937
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problem set 2 caesar check :( handles non-numeric key timed out while waiting for program to exit
I have gotten my code to work for the caesar problem in problem set 2. However, when i check through check50 I run into this error: :( handles non-numeric key
timed out while waiting for program ...
0
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1
answer
151
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Why doesn't my Caesar code not return an output for the cipher text?
Can anyone help me out why my code won't return any cipher text, think it has something to do with the formula ci = (pi + k) % 26 I have done. Any help much appreciated.
// Libraries
#include <...
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1
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22
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Why does my code keep returning 1 with the error message even though I input a digit?
I am trying to complete the Caesar excercise on pset 2. My code compiles fine however it seems to give me me the output Usage: ./caesar key even though I input an int. Any help is much appreciated on ...
0
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1
answer
55
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Pset2 - Ceasar - Non Void function error
I am currently working on pset2 - ceasar.
I have written my code but for some reason I have getting an expected expression error, which itself not very explanatory as to what is wrong with my code and ...
0
votes
1
answer
130
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I am trying to create program for checking command line arguments?
Check that program was run with one command-line argument.
Iterate over the provided argument to make sure all characters are digits.
Convert that command-line argument from a string to an int.
code :...
- 22
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1
answer
99
views
Problem with Pset2!
I'm really not sure why my code doesn't work for char's that are L, and when 20 is added to them on line 34. Appreciate the help for a beginning coder please:)
int main(int argc, string argv[])
{
//...
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