[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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* *** **  *** * *  *    e;

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

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


**  *** **** * * char a;
  ***  *    *** *  ****    b;
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*  * *      **   return 0;
}
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'
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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
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Hidden content!
* ** * ** * **    

**   ***     **    * *  {

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* =   * *** 
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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[]) {
**** * * ** *     * * ***  * **** letterj;
*** **** *  * ***** ** ****** *   letteri;
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**   **     *  **    * ** *** lettere;
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** *   * * *  ** ** *  *** *  
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* *  *  **  ******** *********   * ***** +3;
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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)
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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;
    * * *****     * ***** *
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    *  *   * ** ** * *  *** *

* **  **      * 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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e = **
* = * 
 =   *
** = **

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

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