[Exercise 03] Caesar Cipher Decoder

3 like 0 dislike
4.4k 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 | 4.4k 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:108.162.216.134
©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 | 705 views
12,783 questions
183,442 answers
172,219 comments
4,824 users