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

2 like 0 dislike
20.4k 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 | 20.4k 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:162.159.115.32
©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