[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