[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!
   *       * *** *  *  *
  *  *  ******** *   *

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