C/C++ :: Caesar Cipher Not Decrypting Text Right
Mar 29, 2015
I have managed to print out the encrypted text from the console, however it doesnt decrypt correctly and isn't returning the correct key. I can't seem to find the error that is causing the decrypted text from printing correctly. When I try to decrypt the text it changes it completely as well.
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "rotUtils.h"
bool solved( char decodearr[], char dictarr[][30], int size1, int size2){
char* compared;
bool result = false;
for(int j = 0; j < size2; j++){
[code]....
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Aug 1, 2013
I get the error of not declaring "text" "exit" but I how do I declared those variables, even if they cause problem to file... How can I output the decipher file in a new text...?
#include <iostream>
#include <iomanip>
#include <string>
#include <sstream>
#include <fstream>
#include <math.h>
[Code] ....
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May 25, 2014
The assignment is to open an encrypted file, count the occurrence of each alphabetic character in the file. find the highest occurring letter and use that to find the shift, then apply the sift to the file in order to decipher and then print out the deciphered txt.
#include <fstream>
#include <iostream>
#include <string>
using namespace std;
int main(){
string word;
ifstream txt;
int arr[26] = { 0 };
[Code] ....
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Dec 11, 2013
I am making a simple caesar cypher with a 2D array. I have to make a function for the key shift so
key=5
ABCDEFGHIJKLMNOPQRSTUVWXYZ
FGHJKL...ABCDE
Function Name: Key_Array
This function uses the random key value to make a key array
Passed: value = random key value
Returns: alphabet = rearranged alphabet
[Code] .....
I am having trouble outputting the rearranged alphabet to the screen also.
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Dec 5, 2014
I am struggling to write a code about caesar cipher shift and using ascii code with it. For example letter b should be replaced with the letter c and using the ascii code it should be from 98 to 99 and so on..
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Apr 24, 2015
I'm very new to c and c++ and am currently working on a Caesar cipher that grabs encrypted text from a txt file and decrypts it onto a new txt file. My code builds fine in CodeBlocks and when I run it, there is a new txt file created but it stays blank.
#include <iostream>
#include <fstream>
#include <string>
#include <stdlib.h>
#include <cstdlib>
using namespace std ;
int main(int argc, char *argv[]){
[Code] ....
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Mar 26, 2014
I have a certain method of encrypting text. You get the first character of the word. For example in the word "hacker", you get 'h', and then you get the last character 'r'. The encrypted word until now is "hr". Then we get the same word with the 'h' and 'r' removed, now it's "acke". I do the same thing and get the first character 'a' and the last one 'e' and them to the encrypted word: it is now "hrae".
The left letters of the word are "ck", again we do the same thing and take the first character 'c' and the last character 'k' and and add them to the new encrypted word so it is "hraeck". The above word has an even number of characters and at the end had 2 characters left 'c' and 'k',first and last, in some cases of words with an odd number of characters, only one character is left! I'm completely lost on how to encrypt and decrypt this.
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Jul 16, 2013
I have a simple decryption program but I cant get it to encrypt/decrypt text read from the keyboard using getline (), did i declare wrong?
#include <iostream>
#include <string>
using namespace std;
char text[ ]
(here I have my void decrypt/encrypt functions)
int main () {
cout <<''Enter text to encrypt''<<endl;
getline(cin,text);
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Sep 25, 2014
So this may be against the rules, not sure, grey area probably? However I just bought the PC game Oil Rush, and was having a look at how the assets are packed. As with most games the textures, scripts, sounds and audio are all free to access.
However the game data such as maps, models and other, are packed into UNG files, i.e a custom encrypted file format, which probably is also compressed. So I googled for an unpacker/extracter and found one which also comes with the C source. You can download here. [URL] ....
So I am trying to figure out how these authors work out this file format, from the source we have,
Code:
static const u8 unigine_mask[] = "xffx7fx3fx1fx0fx07x03x01";
u32 unigine_key = 0xa13cdbde;
Looks like a password of sorts. You then have to work out the complete understanding of the file formats, headers, blocks etc.. How is this done...
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Mar 1, 2013
so i need to encrypt a txt document using Caesar encryption. however i don't know how to open a txt and shift the keys into a new txt. the program has to ask the user for the number it should shift. Using arrays, if else. i also need to make a menu so i am using switch.
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Mar 11, 2015
I was assigned to make a vigenere cipher using the function void vegenere(char* to_encrypt, char* key, char* encrypted) I got it to work for the encryption but i have to be able to decrypt the phrase too. I was assigned to write in a flag which indicated encryption or decryption. I tried to implement this but now it wont decrypt and i dont know why, all it does is put the same copy of decryption (which is really encrypted) multiple times until it crashes.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
void decrypt(char *to_encrypt, char *key);
enum flag{encryption = 1, decryption = -1};
[Code] ....
Ok i found my dumb error of putting decrypt on an infinite loop which i fixed by putting it into the if statement after the encryption output. However now it says that the encrypted and decrypted outputs are identical without decrypting the ciphertext
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Mar 1, 2013
So I am trying to make a simple cipher but can't see a pattern between the letters.
Convert:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
To:
E I L Q A G F R B N T C P J Z M D H X K Y W V S U O
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Jan 4, 2014
I finished my Enigma cipher simulator...how should I write the error handling code? Should I throw an exception in main, or in the Enigma ctor and Encrypt() fn when the user enters a non-alphanumeric character?
Rotor.hpp
Code:
#ifndef ROTOR_HPP
#define ROTOR_HPP
class Rotor {
public:
Rotor(char pos='A');
Rotor(const Rotor & rhs);
Rotor& operator=(const Rotor& rhs);
[Code] ....
Output
Code:
Enter rotor settings:
ABCDEFGHIJ
Enter cleartext:
HELLO WORLD
Ciphertext:
0O258 SGY5V
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Jun 5, 2014
I want to make a program that opens a text file and checks the usernames listed in the text files to see if the names are registered on a site such as twitter. How easy would this be to make, what things would I need to know?
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May 31, 2013
I am trying to get text file and read only first 100 lines of the text content using c/c++. how can i do it?
is it something like string line;
getline(stream,line);
??
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Aug 30, 2013
I have a huge text file in following format:
{Bunch of text
.
.
}
[Code].....
I want to extract Text1, Text2, Text3, Text4,..., Text600 in the output file. How can i achieve this?
/* BTW, I am not getting my homework done here. I am an ex-programmer, who has now moved to marketing for some time now, and today, I encountered this problem, which I believe can be solved easily through programming. */
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Aug 31, 2014
i want to create 100 gmail accounts instantaneously....what i want from you guys is i have written a program that create a text file i want that once i give the program the imput of 1 it should delete the first 3 lines from the file i.e. the first account details coz that is already been created and shift the rest of it 3 lines upwards after that i'll write a javascript that will automatically fill and create the accounts with those names in web browser.....my lil program is here:
#include <stdio.h>
#include <conio.h>
main()
[Code]....
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Mar 26, 2013
Program that reads in a normal text file and converts it into mobile phone text. that is if the word is 3 characters or less then ther is no changes to the word and if the word is four or more letters then remove all the vowels from the word except for vowels that are capitals.
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Aug 2, 2014
I have a text file called (Test.txt) with the following text:
This is line one
This is line two
This is line three
How do I go about writing a program that will print a line of text (e.g. "This in line two" on the console screen?
All I can seem to do is display the entire text file.
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Aug 23, 2012
I want to highlight selected text in a wpf textbox while the textbox is not focused. In my application, my textbox never gets focus, and every key input is done manually. I was wondering if there is a way to highlight the selected text when the textbox is not focused?
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Sep 10, 2014
This is part of my code. what i wanna know is if there is a way to fill this array until the text is over instead of having to set the number of strings in the file (20). And then store that number into a variable.
int main() {
//array:
string words[20];
//file to open:
ifstream file("test.txt");
[Code] .....
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Nov 29, 2014
Code software that, from an original text file, generate another file with the text content in upper case.For exemple:
entrence:
luke
tom
alex
outings:
LUKE
TOM
ALEX
My code so far:
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
}
[code]....
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May 21, 2013
I have a very big xml file. I read it using by xmlReader. I have problem when i reach to next line:
<title>Abasia<nemod>(-astasia) (hysterical)</nemod></title>
How I can read all that content. I have to have next string at the end: "Abasia (-astasia) (hysterical)".
I tried to use ReadElementContentAsString() for all elements, but elements like this has exception, because it has child element.
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Sep 6, 2014
I found it incredible that I could not found any working example of simple printing text while I was looking on google.
Somewhere I read I should include (I am not sure if I remember the name right but code::blocks on Windows did not find the header)
Code: #include <stdiostream.h>
so I am trying
Code: #include <stdio.h> and cout << "test"; (error: cout undeclared)
or
Code: #include <stdio.h> and std::cout << "test"; also I tried print("test");
as noted somewhere on Answers. Did not work (error: undefined reference print).
Last try I even got most of links in French. So I hope you'll give me the correct answer. Edit: I found it. I used puts()
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Jan 3, 2013
From my tests I found the problem to be somewhere in the Mantissa part that converts it to binary.
bool xsDLL GetHexFromSF_IEEE754( void* to, Text from, ui08 tSize ) {
from.UpperCase();
int db = 0, dB = 0, dBEnd = tSize, dBLast = ( tSize - 1u ), dbEnd = dBEnd * 8;
ui08 *data = reinterpret_cast< ui08* >( to );
for ( ; dB >= 0; --dB )
data[ dB ] = 0u;
[Code] ....
Adjustments made, still having problems though. After finding a more useful resource [URL] ..... I got the function looking more like it should but am still having problems...
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Feb 27, 2013
How do I get a max or a min in my code using numbers from a text file?
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