[Exercise 03] Caesar Cipher Decoder

3 like 0 dislike
2.5k 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 | 2.5k 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:172.70.178.171
©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 | 348 views
12,783 questions
183,443 answers
172,219 comments
4,824 users