[Exercise 03] Caesar Cipher Decoder

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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 /* */

[Exercise] Coding (C) - asked in Chapter 2: Syntax structure of the C language by (5.9k points)
ID: 26955 - Available when: Unlimited - Due to: Unlimited
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22 Answers

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Hidden content!
#include<stdio.h>

int main (int argc,char *argv)
{
    char a;
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*  ** *  *   ****   *  ***  0;
}
100/100 answered by (244 points)
0 0
Case 0: Correct output
Case 1: Wrong output
commented by (4.3k points)
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Hidden content!
#include   * * * ** * 
int main(int argc, char *argv[]) {


    ***   **  char a;
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}
100/100 answered by (221 points)
0 0
prog.c: In function 'main':
prog.c:10:2: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
  scanf("%c%c%c%c%c", &a, &b, &c, &d, &e);
  ^~~~~
prog.c:10:2: warning: incompatible implicit declaration of built-in function 'scanf'
prog.c:10:2: note: include '<stdio.h>' or provide a declaration of 'scanf'
prog.c:14:2: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
  printf("%c%c%c%c%c", a+3,b+3,c+3,d+3,e+3);
  ^~~~~~
prog.c:14:2: warning: incompatible implicit declaration of built-in function 'printf'
prog.c:14:2: note: include '<stdio.h>' or provide a declaration of 'printf'
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Wrong output
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Hidden content!
int main(int argc, char *argv[]) {


   ** *   char a;
**   *   *** *  **   ** *** b;
  ****    ** * char c;
** * ****       **      * * d;
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***** ***    ******  ***  * 
** ******* *** *  0;
}
50/100 answered by (244 points)
0 0
prog.c: In function 'main':
prog.c:10:2: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
  scanf("%c %c %c %c %c %c", &a, &b,&c, &d,&e);
  ^~~~~
prog.c:10:2: warning: incompatible implicit declaration of built-in function 'scanf'
prog.c:10:2: note: include '<stdio.h>' or provide a declaration of 'scanf'
prog.c:10:25: warning: format '%c' expects a matching 'char *' argument [-Wformat=]
  scanf("%c %c %c %c %c %c", &a, &b,&c, &d,&e);
                         ^
prog.c:12:6: warning: assignment makes integer from pointer without a cast [-Wint-conversion]
  if(a="e",b="b",c="i",d="i",e="l")
      ^
prog.c:12:12: warning: assignment makes integer from pointer without a cast [-Wint-conversion]
  if(a="e",b="b",c="i",d="i",e="l")
            ^
prog.c:12:18: warning: assignment makes integer from pointer without a cast [-Wint-conversion]
  if(a="e",b="b",c="i",d="i",e="l")
                  ^
prog.c:12:24: warning: assignment makes integer from pointer without a cast [-Wint-conversion]
  if(a="e",b="b",c="i",d="i",e="l")
                        ^
prog.c:12:30: warning: assignment makes integer from pointer without a cast [-Wint-conversion]
  if(a="e",b="b",c="i",d="i",e="l")
                              ^
prog.c:14:2: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
  printf("hello");
  ^~~~~~
prog.c:14:2: warning: incompatible implicit declaration of built-in function 'printf'
prog.c:14:2: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:18:5: warning: incompatible implicit declaration of built-in function 'printf'
     printf("errol");
     ^~~~~~
prog.c:18:5: note: include '<stdio.h>' or provide a declaration of 'printf'
commented by (4.3k points)
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Hidden content!
* * * **** * ***

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**     *  *******  *   ** * *  *  
*
100/100 answered by (183 points)
0 0
Case 0: Correct output
Case 1: Wrong output
commented by (4.3k points)
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Hidden content!
* **  ** **  * *** 

*** ***** *   * * *     *  {

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* = ****  * 
* = **  * 
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100/100 answered
0 0
Case 0: Correct output
Case 1: Wrong output
commented by (4.3k points)
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Hidden content!
#include * * * ***  ***  
#include     ** *  *** 

int main(int argc, char *argv[]) {
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    **** ***  * **  **    *
**   * **  *    * ** **    0;
}


INPUT
   ***  **** * **   
 *** **   ***
OUTPUT
* ** *   *  *
100/100 answered by (243 points)
0 0
prog.c:27:1: error: unknown type name 'INPUT'
 INPUT
 ^~~~~
prog.c:30:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'OUTPUT'
 OUTPUT
 ^~~~~~
prog.c:30:1: error: unknown type name 'OUTPUT'
commented by (4.3k points)
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Hidden content!
** *    ** *  ** **  

int *  ** * argc, char *   {


*   *   *****  char a;
***    *  *  * ** *****   **  *  * ** * * char b;
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      ***** 
*   * **  * **  *  ** *  * ** **** ** * * a,b);
**   **       *  
  *  *  * * *   * 0;
}
50/100 answered
0 0
Case 0: Wrong output
Case 1: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include *  * *   *  *

int main(int argc, char *argv[])
{
   ****   **  * letterj;
*  ** *  *    ** *  *    **  * *   * letteri;
 *** *   *   ** * ****** * letterm;
* *****    *   * ***  **     lettere;
***** * *******      ** *   lettern;
 **       ****   ***  ***
 * **   ** * *   * * ***  * ********* * ** input the letter to encode: * **   *   *   *
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* **  **   **    * * ******   
** * * *   *  *   *  *  *     *    * = letterj +3;
**  *  *  ***  * *   ***  * *** = letteri +3;
* *   * **  ** **  *******    * * *   = letterm +3;
* * * **     ***  * * *     *  **** = lettere +3;
 *    ********  ***** *   * ** = lettern +3;
   *  *  *   **  ****** *    *
  *  * **   *  * *  *   *   *   ****** *  **** ***   *** **   * * **  lettere, lettern);
  * **** *  * *  ***  * 

***   ** *****      0;
}
100/100 answered by (220 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
commented by (4.3k points)
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Hidden content!
  * *    *  ***   * *

**  * ****  ** *** *  *** {

**** ** **
* = *****  
* =   ** * 
i = *      
 * =   *  ** 
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  = *  

*   * *
* *  **
*   **  **
** *  * * 
 * *** *

 *  ****** *  * ** * *  ** ******  
 *
100/100 answered by (283 points)
edited by
0 0
prog.c:1:16: fatal error: stdio: No such file or directory
 #include<stdio>
                ^
compilation terminated.
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:6:5: error: 'cin' undeclared (first use in this function)
     cin >> a;
     ^~~
prog.c:6:5: note: each undeclared identifier is reported only once for each function it appears in
prog.c:11:5: error: 'cout' undeclared (first use in this function)
     cout << a << endl << endl;
     ^~~~
prog.c:11:18: error: 'endl' undeclared (first use in this function)
     cout << a << endl << endl;
                  ^~~~
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:6:11: warning: too many arguments for format [-Wformat-extra-args]
     scanf("c", &a);
           ^~~
prog.c:11:14: warning: format '%c' expects argument of type 'int', but argument 2 has type 'char *' [-Wformat=]
     printf("%c", a)
              ^
prog.c:12:5: error: expected ';' before 'return'
     return 0;
     ^~~~~~
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:6:11: warning: too many arguments for format [-Wformat-extra-args]
     scanf("c", &a);
           ^~~
prog.c:11:14: warning: format '%c' expects argument of type 'int', but argument 2 has type 'char (*)[5]' [-Wformat=]
     printf("%c", &a);
              ^
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Wrong output
commented by (4.3k points)
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Hidden content!
#include    ***  ** *  * **
#include *  *  *    * * 

int main(int argc, char *argv[]) {
   ** *   * * ** *    **** *   letterj;
    **       *****  *    *  ** letteri;
***    *****  **  *  * * *    *** letterm;
**     * *       * **** * *  lettere;
**   ** ***  **   *   *   * *   lettern;
  *  **** * *  **  * *   *** **  
 *     ***   *  ** ** * *  **** *   input the letter to encode: * * *    
   *** ** * *** **  *  * **  ** * **   * * * * *     **   ***  ** *  *         *   **  *** ******** *   * * * *   * *  * *  ** *  *** ** *** ** *      
**   **   ** * ** **    **
 *** ***  *   * letterj = letterj +3;
 ** **    *  * * **  **     * * = letteri +3;
   ** ** **  *** * ***   ***  * **  = letterm +3;
  * * *  *** *  ** * **** * *     = lettere +3;
 * * **    ************  **** *    ** = lettern +3;
* *  *  ** ****   ** **    * ** 
 * *****     *** **  ****** **  *** *  *****  ***** ** * **   **  * *   **** *       lettere, lettern);
*   *    * * **  *
 ** ** **   ***  *   ****   **** 0;
}
100/100 answered by (220 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
commented by (4.3k points)
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