[Exercise 03] Caesar Cipher Decoder

3 like 0 dislike
1.7k 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 | 1.7k 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:172.71.222.194
©2016-2023

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 | 254 views
15,032 questions
243,142 answers
215,948 comments
5,696 users