[Exercise 03] Caesar Cipher Decoder

3 like 0 dislike
953 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 | 953 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:172.69.59.69
©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 | 156 views
12,783 questions
183,443 answers
172,219 comments
4,824 users