[Exercise 03] Caesar Cipher Decoder

Question

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 /* */

Answer 1

Hidden content!
*****   **  **    ** * *
#include * ***  **  * 
int main(int argc, char *argv[]) {
** ***  *  *  *  *** **   * **  ** lettera;
*  ** *** ****** *   *  *  letterz;
 *  **     **   * * *   ** letterx;
 *** ****  ** ** *    * *  letterc;
  * * * *   *  *   *   ** * letterv;
* ******   *
      * * **** *** **  ****  ** **** input the letter to encode: ");
*  ** ***    ***   ******    ** *     ****  **    *   *** * ** * ***    * **     *** *** *   *** **    * **  * * ***
 *   ****      **   **** = lettera + 3;
 * *    *** **** *    ** ***    = letterz + 3;
 *  *   * ** *   **   * *** **** = letterx + 3;
      * ** * *     ** ** * ******** = letterc + 3;
*****   ** * *  * ***   **   * **  = letterv + 3;
** *****    ***  * ** *
** **** * *** ** * ********   **   ***** **  ** **  * * *    * *   ***    *   
*** * ***** ** * **     
**   **** * ***  ** *** **         0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

---

Nice, it is correct. You might be wondering why your automatically-generated score is 0.
That's because it expects its output to be only 'hello'. However, what your program showed was:
     Please input the letter to encode: ebiil
     hello

Anyway, great job. Full marks.

Answer 2

Hidden content!
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** *      * * *   ***   *   

int **  * argc, char ** *  {
  ** * **      char ***  *
  * *  *   ** 
* ** * **  * * a =  ***  *
** *** * ***** * b = * ***  
*     *   * * c =   * * 
 **      ** * * d =   * **   
    ***  *** *   e = *** ** 
*    * ** ****** 
**        *  *  a += 3;
   **   **  b += 3;
* *     ** *  c += 3;
     ***   *  *  d += 3;
*   *  * **   ***  e += 3;

* * * *    ** *  **  *
 ****   * * *  ******  *  
   *  *    *  * **  * 
***** *    *  *     *   *
**   * *     **   * **    
* *  *     * 
   *   **  *  
  **  * **  
** ** ***  **      *** * *  * 0;
}

Comments

Case 0: Correct output