[Exercise 03] Caesar Cipher Decoder

3 like 0 dislike
2.4k views

You have received an encrypted message from Julius Caesar-- the message is ebiil.  You are asked to decipher the message in order to understand what Caesar trying to say to you.

Hint

Luckily, Caesar has given you a hint, he says: 'I, myself, encoded the message by shifting every word backwards by 3.' 

Solution

Write a program that receives 5 characters 'ebiil'. Then decode those characters into 5 new characters.

Example

#include <stdio.h>

int main(int argc, char *argv[]) {


	char a;
    	char b;
	 	
	scanf("%c%c", &a, &b);
	
	//decode the message how??
	
	printf("%c%c", a,b);
	
	return 0;
}

Input

ebiil

 

 

 

 

 

 

 

 

 

 

Output

hello

** REMEMBER ** 
This is an online-compiler, don't put anything except the codes. If you want to make a comment, please use // or /* */

[Exercise] Coding (C) - asked in Chapter 2: Syntax structure of the C language by (5.9k points)
ID: 26955 - Available when: Unlimited - Due to: Unlimited
edited by | 2.4k views

22 Answers

0 like 0 dislike 
Hidden content!
#include<stdio.h>

int main (int argc,char *argv)
{
    char a;
  ***** *      *** *****   **  * b;
 *** *  ** *   *    **  *  **   c;
 *  ** *    * *   * * *  d;
** ******   * * *******  ***     e;

 * ** ****    **  * * * *** ** * ** *   ** * ** ***  * * **  * ** *** *     *    **** * * *   ***   

 **** *** *   * **  *  **  * *
 * * * **    *** *  ***   ***   *****
 ** *  *  * ** **  *    *    *  *
   ** ***  *    *  *  *  * **   **
** * *     *  **** * ***  * *  *** **

 ** **  * ** * *  ***   ** ** *****   **** *****       * *    
* **       **    *** * *** 0;
}
100/100 answered by (244 points)
0 0
Case 0: Correct output
Case 1: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include * ****  **   **
int main(int argc, char *argv[]) {


*  **  *   *  *  char a;
  ***** ****** * *** *** **    b;
*    *****  *  ****** ******* c;
*** **** *   ***** * * ** * d;
    **  ****  *** *    ** **** e;
 ** **  ***   ** ** ** ** *   **    
 *  *   *   * * **  ****  ******* ** *  *  * **  * * * **  * * ******  *** *        * **
* *  ****   ** *  
 * *  **  *** ** *   *  * the message how??
 * * *   * * *** **  
  ***  *    *   * *      ********    * * *  *** ** *
  ******   * **    
* * ***** *   *  return 0;
}
100/100 answered by (221 points)
0 0
prog.c: In function 'main':
prog.c:10:2: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
  scanf("%c%c%c%c%c", &a, &b, &c, &d, &e);
  ^~~~~
prog.c:10:2: warning: incompatible implicit declaration of built-in function 'scanf'
prog.c:10:2: note: include '<stdio.h>' or provide a declaration of 'scanf'
prog.c:14:2: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
  printf("%c%c%c%c%c", a+3,b+3,c+3,d+3,e+3);
  ^~~~~~
prog.c:14:2: warning: incompatible implicit declaration of built-in function 'printf'
prog.c:14:2: note: include '<stdio.h>' or provide a declaration of 'printf'
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
int main(int argc, char *argv[]) {


  ** *   char a;
   * ** ** *   ******* **    **  b;
   ** *  *    * char c;
 ** *  **  ** *  ** *  *  * **  * d;
*** *** **  * **   * ***    **   * e;
 * ** *** **        **  * * **  * * *      
        * ** **  %c %c %c %c ** * *  *   *   *  *** *   *  *   *   * **** 
*    *   
      *   **   ***  *    *  * *   * **       ** **** * *** **        ******    **  *   * 
  * ***    *** *   *  *  ** 
*  *  *    * * ***   **  *    *   
 * ****         ****   *
 **** ** *  ** ****** *      ***  
  *** **  **   *     *
*    *** ** ** *    * * *****   ** ***    ** **  *  
*  * ****  **  ***   ** 
**    * *** ** ** ** ** 0;
}
50/100 answered by (244 points)
0 0
prog.c: In function 'main':
prog.c:10:2: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
  scanf("%c %c %c %c %c %c", &a, &b,&c, &d,&e);
  ^~~~~
prog.c:10:2: warning: incompatible implicit declaration of built-in function 'scanf'
prog.c:10:2: note: include '<stdio.h>' or provide a declaration of 'scanf'
prog.c:10:25: warning: format '%c' expects a matching 'char *' argument [-Wformat=]
  scanf("%c %c %c %c %c %c", &a, &b,&c, &d,&e);
                         ^
prog.c:12:6: warning: assignment makes integer from pointer without a cast [-Wint-conversion]
  if(a="e",b="b",c="i",d="i",e="l")
      ^
prog.c:12:12: warning: assignment makes integer from pointer without a cast [-Wint-conversion]
  if(a="e",b="b",c="i",d="i",e="l")
            ^
prog.c:12:18: warning: assignment makes integer from pointer without a cast [-Wint-conversion]
  if(a="e",b="b",c="i",d="i",e="l")
                  ^
prog.c:12:24: warning: assignment makes integer from pointer without a cast [-Wint-conversion]
  if(a="e",b="b",c="i",d="i",e="l")
                        ^
prog.c:12:30: warning: assignment makes integer from pointer without a cast [-Wint-conversion]
  if(a="e",b="b",c="i",d="i",e="l")
                              ^
prog.c:14:2: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
  printf("hello");
  ^~~~~~
prog.c:14:2: warning: incompatible implicit declaration of built-in function 'printf'
prog.c:14:2: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:18:5: warning: incompatible implicit declaration of built-in function 'printf'
     printf("errol");
     ^~~~~~
prog.c:18:5: note: include '<stdio.h>' or provide a declaration of 'printf'
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
 *   *   *   ***   ** **

*   ****   **  *   *  * {

*      **
* = * 
   =  * **
  = ***    
** = * ** **
*  =  ***   *

e =  * 
*  = **
* = *  
  =    

*     * 
****  *
  ** **
 * ***  *
*  *  *  

 *    ***  **     *  ***** *
100/100 answered by (183 points)
0 0
Case 0: Correct output
Case 1: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
 *  * *  ***** **** *

* **     * ***  **** {

*  *  *   
* =  **  ** 
 * = *  ***
* = * *****
  =     **
 * =   *** *

e =  **
  = ** 
** = *** 
*  =  **

 *      
* ** *  
*   * * *
* **    *
* **** 

**   ** *  * *  **  * *   *    *  **
100/100 answered
0 0
Case 0: Correct output
Case 1: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include    ***    * ***   
#include    *   *    * **

int main(int argc, char *argv[]) {
* * * *** **  ******** *  ** ** letterj;
*  *  ** *  * *  *     **         letteri;
 * *  **  ** *  * * ** *  *  * *   letterm;
*  ** ***** ** * **** * ** * lettere;
 *   **  **** * * *       ** *    lettern;
  * **** ***  **    *  * **
 *   **  *  *  *   *  *   ***   ** *  *     * input the letter to encode: ");  
**  * * *     ***    ** *  
**   ***  **  *** *  ** * ***  * * * * **** ***     * *    * * &letterj,     *  * ** &letterm, * * * *     **  *****  *  
    *   ***  *  ****** ***    *  ** +3;
     **** **** ** *******  *  ** * +3;
*** * ** ****** *   *  *  ** *  * **  * +3;
* **  ** **  * * *     ***  *** **    +3;
*** ****  * ** *   **** * *  ***      +3;
   **   * *    * * * *     *  *
* ** * *** * **** ***  *   *
       ****   **** *    *  *****     * *   *    *  * ******     lettere, lettern);
*   *   *  *** *** ***   
*** *    *      * *** **    *   0;
}


INPUT
* ** ****  *    ***
** ******* *** 
OUTPUT
  *  * **  ** * **
100/100 answered by (243 points)
0 0
prog.c:27:1: error: unknown type name 'INPUT'
 INPUT
 ^~~~~
prog.c:30:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'OUTPUT'
 OUTPUT
 ^~~~~~
prog.c:30:1: error: unknown type name 'OUTPUT'
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
 ****    *****  **  ** *** *

int ****  argc, char * *    {


* *   **  *  ** char a;
****** *** *  * *   * * *  *  * *  * char b;
* *   *  **  * **  ***      * *  *  *  
** * ** *  *   ** ***** ***  * ***** **** * ** ***   * *   *
  * *  * **  
 * *     *        the     * how??
 ****** *  * ***  
     * *      * *  ***     *** * ** a,b);
 ***   * * *   
  ***      * *    ** 0;
}
50/100 answered
0 0
Case 0: Wrong output
Case 1: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include *   * ** *   ***

int main(int argc, char *argv[])
{
 * * *      ***   letterj;
 **   *  *  *****      *   ** letteri;
* *     **  * *   *** ** ** letterm;
* ***   * ** * * *    **  lettere;
  *****  **   *  **     ****** * lettern;
 *  * *  *  *  *****  * ***
***  ******   * *    ***     * ** *  input the letter to encode:   * ****  **    **
      ********** **** **  *    ****     * *    * ***    ** *   *  * *  *    *  *  ****       * * *
  *    *********  * ***  
**    * * **    *    * *  **  * = letterj +3;
  ** * *   *  *    * *** ** **  = letteri +3;
  **     *   *   *   *  **  * = letterm +3;
*  **  * ****     * *  ***** = lettere +3;
* * *** *    *  **  ***  **** *  * = lettern +3;
  **  * * *     * *   ******   *
 *  * * * * ** * *  * ** **    *      *** **    ****  ** **    * **  ***      lettere, lettern);
** * *****   **  ** ********

*  ** **********   0;
}
100/100 answered by (220 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
    *    * ***  * 

 *          *  *   *** {

**** * * 
*  = *** *  
  =    *  
i = **    ** 
 * =        
* = *  *  *
e =  *
*  = **
  = **
* =    

  ** *
 *    * 
   ****
* *****  
*** **  *

* ******* **  **    *   * *    
*
100/100 answered by (283 points)
edited by
0 0
prog.c:1:16: fatal error: stdio: No such file or directory
 #include<stdio>
                ^
compilation terminated.
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:6:5: error: 'cin' undeclared (first use in this function)
     cin >> a;
     ^~~
prog.c:6:5: note: each undeclared identifier is reported only once for each function it appears in
prog.c:11:5: error: 'cout' undeclared (first use in this function)
     cout << a << endl << endl;
     ^~~~
prog.c:11:18: error: 'endl' undeclared (first use in this function)
     cout << a << endl << endl;
                  ^~~~
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:6:11: warning: too many arguments for format [-Wformat-extra-args]
     scanf("c", &a);
           ^~~
prog.c:11:14: warning: format '%c' expects argument of type 'int', but argument 2 has type 'char *' [-Wformat=]
     printf("%c", a)
              ^
prog.c:12:5: error: expected ';' before 'return'
     return 0;
     ^~~~~~
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:6:11: warning: too many arguments for format [-Wformat-extra-args]
     scanf("c", &a);
           ^~~
prog.c:11:14: warning: format '%c' expects argument of type 'int', but argument 2 has type 'char (*)[5]' [-Wformat=]
     printf("%c", &a);
              ^
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include   *** *     ****
#include  * *   ***    *  

int main(int argc, char *argv[]) {
 * *** *   ** **  **    * letterj;
   *    *** **** *   *  **    * letteri;
  **  ** ** **  *  ****  ***  letterm;
************  ******    ** *  *  lettere;
  ** *** *       * *   **   lettern;
* **  * * ** * ****** * **
 *********  *  ***     **   **  * **  input the letter to encode: *  *   
* ** *   *** * ***  ** ********** * *  *** *  * * ***    *  ****      * **  *******  ** * * ***    **   *   *  ** **      * *   **   *  ***     *  
 * ***** ** **       ** ***
  * **   * *  *** letterj = letterj +3;
** * **** ***  *** * ***** *  * = letteri +3;
  **   * ****** *  **  ** **   = letterm +3;
* * * * **   *  ** **  *** **  * = lettere +3;
*** *  * * * *  * ** * ***   = lettern +3;
   ** ***  *** *  * *  ** * *
 * ***   *  * * * ** *  *   * ****  * ** *   *  * * *** **  **    ** ** *** *   lettere, lettern);
*  **   **    * ***   *
* ** *** ***   * ** ***   * ** * 0;
}
100/100 answered by (220 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
commented by (4.3k points)
Page:
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.71.254.25
©2016-2024

Related questions

0 like 0 dislike
2 answers
Shifting backward
[Normal] Essay (Open question) - asked Dec 12, 2017 in Chapter 2: Syntax structure of the C language by 許哲瑋 (449 points)
ID: 37081 - Available when: Unlimited - Due to: Unlimited | 343 views
12,783 questions
183,443 answers
172,219 comments
4,824 users