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

2 like 0 dislike
20.6k 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 | 20.6k 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:104.23.243.164
©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 | 20.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users