[Exercise 03] Caesar Cipher Decoder

3 like 0 dislike
7.4k 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 | 7.4k 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:172.69.17.67
©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 | 1.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users