[Exercise 03] Caesar Cipher Decoder

3 like 0 dislike
10k 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 | 10k 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:104.23.243.108
©2016-2026

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 | 1.4k views
12,783 questions
183,442 answers
172,219 comments
4,824 users