[Exercise 03] Caesar Cipher Decoder

3 like 0 dislike
5k 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 | 5k 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:172.69.17.131
©2016-2025

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 | 768 views
12,783 questions
183,442 answers
172,219 comments
4,824 users