[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