[Exercise 03] Caesar Cipher Decoder

3 like 0 dislike

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)
Available when: Unlimited - Due to: Unlimited
edited by | 332 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 (4.4k 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 (4.4k points)
0 0
Case 0: Correct output
Case 1: Wrong output
commented by (4.4k 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 (4.4k 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 (4.4k points)
0 like 0 dislike 
Hidden content!
 ** *    * *   * *      *

     ** * *    * *    {

 *    * * 
*  = **** *
* =  * *  *  
* = * *****
  = * *     
   = * *    

e = **
  = ** 
* = **
 =  

** *** * 
 ****
 * * * 
**    
 ***

 ***  ** **  *** *  *     * ***   
**
100/100 answered
0 0
Case 0: Correct output
Case 1: Wrong output
commented by (4.4k 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 (4.4k 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 (4.4k 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 (4.4k 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 (4.4k 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 (4.4k 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 (4.4k 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 (4.4k points)
0 0
Case 0: Correct output
Case 1: Wrong output
commented by (4.4k 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 (4.4k points)
Page:
Get it on Google Play Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:162.158.79.177
©2016-2020

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)
Available when: Unlimited - Due to: Unlimited | 53 views
10,769 questions
120,689 answers
112,784 comments
3,802 users