[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!
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#include   ** **    ** * **
int main(int argc, char *argv[]) {
  *  *** ** * ****  *  * * **  lettera;
           **  ****  *  *  **  letterz;
 * ***   * *  * *  * * **  * letterx;
* *** ** *** ***  ** *  * letterc;
   * *****  *     **    *  ** * letterv;
  *** *   *** 
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****** ** *  *     ** ****  **   ***** *       ****  * *   ** * * *  *  * * *** *** *  ** *** **   ******  *  ****
***  *  ** * **  ***    *  *****    ** * = 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!
* **   *    *  **  *  ** 
     * ****  ** *  ** 

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