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

2 like 0 dislike
9.1k 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 | 9.1k 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:172.69.17.186
©2016-2025

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 | 8.2k views
12,783 questions
183,443 answers
172,219 comments
4,824 users