[Exercise 03] Caesar Cipher Decoder

3 like 0 dislike
2.4k 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 | 2.4k 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:172.70.130.222
©2016-2024

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 | 343 views
12,783 questions
183,443 answers
172,219 comments
4,824 users