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

2 like 0 dislike
20.7k 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 | 20.7k 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:104.23.197.64
©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 | 20.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users