[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