[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