[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