[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:172.70.130.20
©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 | 764 views
12,783 questions
183,442 answers
172,219 comments
4,824 users