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

2 like 0 dislike
22.1k 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 | 22.1k 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:162.159.115.10
©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 | 22.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users