[Exercise 03] Caesar Cipher Decoder

3 like 0 dislike
4.3k 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 | 4.3k 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:172.71.255.117
©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 | 676 views
12,783 questions
183,442 answers
172,219 comments
4,824 users