10-19 Exercise 3: Prints the number with its digits reversed

2 like 0 dislike
23.5k views

Write a program that input four-digit number, then prints the number with its digits reversed .

寫一個輸入4位數字，反轉輸出這個數字的值

Example input: 

5455

Example output:

5545

Example input: 

5400

Example output:

45
[Exercise] Coding (C) - asked in Chapter 4: Expressions by (12.1k points)
ID: 27669 - Available when: Unlimited - Due to: Unlimited
edited by | 23.5k views

64 Answers

0 like 0 dislike 
Hidden content!
** ** **     *  ** * * 
int main()
{
** *** * * *    a,b,c,d;
** ***  *   * *  * ** *  **** * *  **  * * *   *** ***** *** ** ******** 
* * *    ****  
  {
 **  **** * *   ***  **  *    *     * **  **  * ****    *      * 
  }
*** * * **** * *   
  {
***** * *  ***** **** * *    *   ***  *  * * * *      **   *** **  *
  }
*   * *  * **  * * *  *
 *** *  **** *
**   *     *** **** ** ** *  * * ***** *  *****      *** *  * 
  }
*   **  **   ***
 * ** *********
**    * * *    ** ***  **  *   ***   **     * ** * ****  **  **
  }
   **** **  ** * *  * * 0;
}
answered by (-255 points)
1 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
**   **  *   ** * *  **  
int main(){
**    *   *  **       *   ** * *   str[4];
*   ** ****   * ** **  *****  **    ** * ** **** *  *   * *   * 
 *** ** ** * *    ** *   * **   
*  ** ******  *  **** ******     * *****  *    
** ** ********    **   **** **** *  0;
}
answered by (-116 points)
0 1
prog.c: In function 'main':
prog.c:5:13: error: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[4]' [-Werror=format=]
     scanf("%s",&str);
             ^
prog.c:6:5: error: implicit declaration of function 'strrev' [-Werror=implicit-function-declaration]
     strrev(str);
     ^~~~~~
cc1: all warnings being treated as errors
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>

int main()

{
 * ***  ***   * ** *  ** * ** a,b,c,d;
   * * ** * *    ***    * ***** *      **   * ** ********      **  * *  * * *   **   

* * ** *  *  * *  *     * (d!=0)
 *   *  ***** ** **** ** *    ***
* *** *    *** * *** *   * *        * ***  ****** *   ** ** *  ***      ** **** *** **  *
    }

    *  *  * * ** * * ****  ** (c!=0)
**   *  * *   ** * ******  
**   * ******* **    ** * *     ***    **  ****  *  ** (d==0)
 **     *  ****  *   **  *  *** *** ***     ** **** * ** *  ***  ********    * **
 * ** *** *****  ***  *****

**** ***   *   * *   *   *  ** (b!=0)
* ** ** * * ** **  **  ***   
*  *  * **  ****  *  *  **    ***   * **   ***   *  ******  (d==0 && c==0)
*   *   *      *  ** *  **  ********** **  * **    **    ******* ** * ** *    
    }



 *** ****   ***   * *  * ** ** 0;
}
answered by (-249 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include ** ** * *  **  **  
#include   ** * ***  

int input[4];
int digit;
int output = 0;
int i;
int main(){

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

*  *       *   * **  *****  * *   += input[0]*1;
   **** * * * *   **** ***** * +=   *****
* **  ** *  ** *****  **  * ** += * ***  ***
*      *    ***     *  ** * * * += **** *   * 


 ** *  *  *   * *    *****  *    ** ***** **  **  **
* *******  ** *  * **   *** *** 0;
}
answered by (-286 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include  * ** ****    * 
#include       **** ** ***

int input[4];
int digit;
int output = 0;
int i;
int main()
{

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

****  *   * * * **  *    * **     *  **   
*  **       ***     ****** *     *  **** ****    *  += input[i]*pow(10,i);
***  * **** *  ** * * *   *** 

   *  *****   **   ***** ***** * ****    *  * ****
**  **  *   **  ***    *****   0;
}
answered by (-286 points)
0 0
prog.c: In function 'main':
prog.c:14:28: error: implicit declaration of function 'pow' [-Werror=implicit-function-declaration]
         output += input[i]*pow(10,i);
                            ^~~
prog.c:14:28: error: incompatible implicit declaration of built-in function 'pow' [-Werror]
prog.c:14:28: note: include '<math.h>' or provide a declaration of 'pow'
cc1: all warnings being treated as errors
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
int main()
{
*   **  *  ****    ****   ** a,b,c,d;
  ***           ** *   **  ***      ** *   *  ** **** **   * * * *** * *    ** * *
    if
***  * ** * **** ** ****** **  ****   *   ** *   ** ***      * * && c==0 && d==0)

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

    ** **  **   **    *   *  *  if

        * * *  * ** **    * * * *  ******    *   * *** && d==0)

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

** ** ** ***  * * * *   **  if

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

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

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

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

********* * **   * ** *  *** *    0;
}
answered by (-196 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include * * * ***   **** *

int main()
{
*   **  a, b, c, d, e, f, g, h, x;
     *  ****** * **  *** *   *  ** **   &b *        ****  **
 * * *      *** ** ** *  *
 * * ** ** *   * 
   **     **    
 ** * *** *
*  ** ***   ****     
* * *  *    * **  *** ** *     **  
    *  ** **    0;
  **  **
answered by (-66 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include          ** *    *
int main ()
{
**** **  *  ** **** *  * ** n, reversed_number = 0, remainder;
  **** * *    *****  **** **  * * ** *  &n);
* *********   **   * * *   *  (n != 0)
 *  * **  ** ** **** 
** ***  ** ** ***** **    ** ** ** *****    * *** ** * **   * = n%10;
       **  *  **** **  * *** *** * ** ** * ** ** ** *****   * =  ** * * * + remainder;
  **  * ** *  * *  * ** ** *  **  **  *    *  /= 10;
    ***  ** *    ** * *   *   
  *** * *** **  **  *  *  **  *** ** ** *   *    reversed_number);
**** ***** * * *    **** * * 0;



}
answered by (-140 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
*    *   * *** * * 
int * * * *    
int num; 

* ** ** * * *** 
 ** * **  **** ** * *  *  ** * *   
*   **   ** ** * ** 
**  ** **  
 ** ****  *  *****  * * *  
 ** 
} 
     ***     *  
return 0; 
}
answered by (-141 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output
Case 5: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output
Case 5: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output
Case 5: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output
Case 5: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdlib.h>

using namespace std;

int main()
{
*    ******     ****      * * *** x;
      ***     * * ** * ** * *     ** ** **    *
  ***  * ******  * ** * *     * ****  * ***** *     *   ** **    ***   ***              
 * *  ***** *   *   **      *** **  ** * *  *  ****  * *** **  ******   *
  ****  *** *     **             * **   ** **   **   **   **  * ***  * *  ***   *  ****  ** **** *  * ****         
  ****    *  *  *    **  **  ** * * ***  ** ** *  
* ***  ** ** * * * ***** *   *  **  **    * *** **    **** *   * * **     **  *  ** ***   * *  ;
 ************     * **  **  *** 
       ***             * *****  0;
}
answered by (-141 points)
0 0
prog.c:3:1: error: unknown type name 'using'
 using namespace std;
 ^~~~~
prog.c:3:17: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'std'
 using namespace std;
                 ^~~
prog.c: In function 'main':
prog.c:7:5: error: unknown type name 'string'
     string x;
     ^~~~~~
prog.c:8:11: error: 'cin' undeclared (first use in this function)
     while(cin>>x){
           ^~~
prog.c:8:11: note: each undeclared identifier is reported only once for each function it appears in
prog.c:10:24: error: request for member 'length' in something not a structure or union
         for(int i=0;i<x.length();i++){
                        ^
prog.c:11:22: error: request for member 'length' in something not a structure or union
             re[i]=x[x.length()-i-1];
                      ^
prog.c:13:9: error: 'cout' undeclared (first use in this function)
         cout<<atoi(re)<<endl ;
         ^~~~
prog.c:13:25: error: 'endl' undeclared (first use in this function)
         cout<<atoi(re)<<endl ;
                         ^~~~
commented by (4.3k points)
Page:
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:104.23.197.65
©2016-2026

Related questions

1 like 1 dislike
85 answers
10-26 Exercise 2: Displays the number of its digits and their sum
[Exercise] Coding (C) - asked Oct 26, 2017 in Chapter 6: Loops by semicolon (5.2k points)
ID: 28914 - Available when: 2017-10-26 18:00 - Due to: Unlimited | 23.9k views
12,783 questions
183,442 answers
172,219 comments
4,824 users