[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