[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:172.70.100.162
©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