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!
#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 ;
                         ^~~~
0 like 0 dislike
Hidden content!
#include <iostream>
#include * * ****

using namespace std;

int main()
{
* ** * * * * ** * * ** x;
* ***** * ** * * * ** ** * ** ***
* * *** * * * * ** * * *** * * * * * * ***** ** ** ** * * ***          
* *** **** *** *** *** * * ** * * * ****** ** ** * * **** ** * **
** ***** * ** *** * * ** * ** * *** * * * * * * ** ** ** * *** * * *** ** * *** *      
** * ****** * ** *** * ***** * * ** * *
* * * * * ********* ** * * *** ** *** * *** ** ** * ** ** * ** * * ** * *** *** ;
**** ***** * ** * ** ** *
* * *** * ** ** * * * 0;
}
answered by (-141 points)
0 0
prog.c:1:20: fatal error: iostream: No such file or directory
 #include <iostream>
                    ^
compilation terminated.
0 like 0 dislike
Hidden content!
* ** * *** ** *
* ***
{
** ** ***** * ** ***
* *** * *** * * * ******
a = *
* * * *** ** *** =

c = ***
* ** * = *

e = *
** * **** *** = *

g = **
* * *** * ** * = **

= c;
=
* =

= **
= *
* = *


* = * * * * **
*** ** ** ********** *

*****
}
answered by (-141 points)
0 0
prog.c: In function 'main':
prog.c:4:19: error: variable 'h' set but not used [-Werror=unused-but-set-variable]
 int a,b,c,d,e,f,g,h,v,swap,temp,sum;
                   ^
cc1: all warnings being treated as errors
0 like 0 dislike
Hidden content!
*

* ** * * ** **** *
* **** ** ** ** * *** ** **
a = *****
** **** * * **** * = *

c =
* *** * ** ** = *

e = * *
* * * *** * ** ** = * *

g =
***** * * ** * =

* * = *
* =
=

* =
** =
** = * *


*** = * ** * * * *
* * * * ** *

** * *
answered by (-141 points)
0 0
prog.c: In function 'main':
prog.c:4:1: error: implicit declaration of function 'scanf' [-Werror=implicit-function-declaration]
 scanf("%d",&v);
 ^~~~~
prog.c:4:1: error: incompatible implicit declaration of built-in function 'scanf' [-Werror]
prog.c:4:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
prog.c:27:1: error: implicit declaration of function 'printf' [-Werror=implicit-function-declaration]
 printf("%d",sum);
 ^~~~~~
prog.c:27:1: error: incompatible implicit declaration of built-in function 'printf' [-Werror]
prog.c:27:1: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:3:19: error: variable 'h' set but not used [-Werror=unused-but-set-variable]
 int a,b,c,d,e,f,g,h,v,swap,temp,sum;
                   ^
cc1: all warnings being treated as errors
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
[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