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

2 like 0 dislike
23.7k 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 | 23.7k 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:104.23.243.109
©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 | 24.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users