3 like 0 dislike
迴文判斷

迴文是指一個字串從前面讀過去跟從後面讀過去是一樣的

所以 abcdcba 是一個迴文

請寫一個程式判斷書入的字串是不是迴文

輸入說明:

會輸入一個字串,字串中間不會包含空白字元

輸出說明:

如果輸入的字串是迴文,請輸出YES,反之則輸出NO

輸入範例:

abcdcba

輸出範例:

YES
[Exercise] Coding (C) - asked in 2017-1 程式設計(一)AD by (18k points)
ID: 33757 - Available when: Unlimited - Due to: Unlimited
| 1.2k views

22 Answers

0 like 0 dislike
Hidden content!
**** * * * * ****
* *** * * * **
*
int ****
{
**** ** ** char * =
*
** * * ** * * * *** ** * a);
** * * * * * int x = ** *
* ** *
* * ** * int i, * *
* *** * * *** for(i = 0; i * *** x / 2 ; i++)
* * * * * * {
* ** ** *** ***** * * * ** == a[x - i - 1])
* * * * ** * *** * *** * * flag = 1;
**** * * * * * ** else
***** * * *** * * * * **** {
** * * *** * * * *** * ****** ** ** flag = 0;
** * **** * ** * * * * * *** *
* ** * ** * ** * * * }
**** *** ** ** }
* *** ** * * * ** == 1? * * * **** : * *** * **
****
** ***** * 0;
}
answered by (236 points)
edited by
0 0
prog.c: In function 'main':
prog.c:7:4: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
  x=strlen(a);
    ^~~~~~
prog.c:7:4: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:7:4: note: include '<string.h>' or provide a declaration of 'strlen'
0 0
Case 0: Correct output
Case 1: Wrong output
0 0
Case 0: Correct output
Case 1: Wrong output
0 0
Case 0: Correct output
Case 1: Wrong output
0 0
prog.c: In function 'main':
prog.c:6:10: error: stray '\357' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
          ^
prog.c:6:11: error: stray '\274' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
           ^
prog.c:6:12: error: stray '\235' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
            ^
prog.c:6:13: error: stray '\357' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
             ^
prog.c:6:14: error: stray '\274' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
              ^
prog.c:6:15: error: stray '\202' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
               ^
prog.c:6:16: error: stray '\357' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
                ^
prog.c:6:17: error: stray '\274' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
                 ^
prog.c:6:18: error: stray '\202' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
                  ^
prog.c:6:7: error: array size missing in 'a'
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
       ^
prog.c:11:23: error: stray '\357' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                       ^
prog.c:11:24: error: stray '\274' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                        ^
prog.c:11:25: error: stray '\211' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                         ^
prog.c:12:6: error: expected ')' before 'if'
      if(a[i]==a[j])
      ^~
prog.c:24:2: error: expected expression before '}' token
  }
  ^
0 0
prog.c: In function 'main':
prog.c:6:9: error: stray '\357' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
         ^
prog.c:6:10: error: stray '\274' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
          ^
prog.c:6:11: error: stray '\221' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
           ^
prog.c:6:12: error: stray '\357' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
            ^
prog.c:6:13: error: stray '\274' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
             ^
prog.c:6:14: error: stray '\220' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
              ^
prog.c:6:15: error: stray '\357' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
               ^
prog.c:6:16: error: stray '\274' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
                ^
prog.c:6:17: error: stray '\220' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
                 ^
prog.c:6:18: error: stray '\357' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
                  ^
prog.c:6:19: error: stray '\274' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
                   ^
prog.c:6:20: error: stray '\220' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
                    ^
prog.c:6:7: error: array size missing in 'a'
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
       ^
prog.c:11:23: error: stray '\357' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                       ^
prog.c:11:24: error: stray '\274' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                        ^
prog.c:11:25: error: stray '\211' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                         ^
prog.c:12:6: error: expected ')' before 'if'
      if(a[i]==a[j])
      ^~
prog.c:24:2: error: expected expression before '}' token
  }
  ^
0 0
Case 0: Wrong output
Case 1: Wrong output
0 0
Case 0: Correct output
Case 1: Wrong output
0 0
Case 0: Correct output
Case 1: Correct output
0 like 0 dislike
Hidden content!
** ** **** * ***
**** * * *** *
int main()
{
** * * char a[100];
** * * ******* * * * *** ***** * * * *
***** *** * {
* * * * ** * * * * ** int
* * *** * * * * * ** * ** *
* ** ***** * ** **** * * * int test=y/2;
*** *** * * * ** * * **** * * *** * **
****** * ** * ** *   {
* ***       ** *   *** * *
* ****     ** ** * **** * ** * ** c++;
* ** * * * * * * *** else
**** ** * * ** ** * * * ** ** *** * c=0;
****** * *** *** * }
* ** ****** ** * *** * ****** *
*** ** ** ** ** * ** ** *** * * * * ** ** * ** **
** **** ** * * ** * else
** ** * ** * ** **** ** *** ****** * * * *
** ** * ** }
* * * *** return 0;
}
answered by (100 points)
edited by
0 0
Case 0: Wrong output
Case 1: Wrong output
0 0
Case 0: Wrong output
Case 1: Correct output
0 0
Case 0: Wrong output
Case 1: Correct output
0 0
Case 0: Correct output
Case 1: Correct output
0 like 0 dislike
Hidden content!
#include * ** * **
#include * * *** * * **
 
 int is_palindrome(char *s)
 {
*** ** ** *** *** *** i, len;
* ** ** *
* *** *** ***** * * = strlen(s);
* *** * * **
*** * ****** **** * = 0; i < (len /2); i++) {
* * * ** ** ** ***** *** * *** (s[i] != s[len-i-1])
* * * * *** * ** ** * * *** * ** ** * 0;
* * * * *** * * *
* * ** *******
** * ** ** **** * * * (i >= len/2)
** * ** ** *** * * * * ** * 1;
* ** ** *** ***** ***
**** * * **** ** *** ** * * * 0;
 }
 
 int main() {
** * ** * * * s[256];
*** ** *****
* * * *** * ** {
* * *** * * * ** ** **** **
* ** *** ** *** ******* * **
****** * * **** (is_palindrome(s))
* * * * ** * * * * ** ** * * * **** * ** * *** * * * * s);
* ***** * ** * * ***** * ** * *
** * ** * ** * *** ** * * * * *** ** * *** * * * * *** s);
* * ** * ***** *
** ***** * ** *** *
answered by (212 points)
edited by
0 0
Case 0: Wrong output
Case 1: Wrong output
0 0
prog.c: In function 'main':
prog.c:25:6: warning: 'gets' is deprecated [-Wdeprecated-declarations]
      gets(s);
      ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:28:15: warning: too many arguments for format [-Wformat-extra-args]
        printf("Yes\n", s);
               ^~~~~~~
prog.c:30:15: warning: too many arguments for format [-Wformat-extra-args]
        printf("NO\n", s);
               ^~~~~~
/tmp/ccSNkWCs.o: In function `main':
prog.c:(.text+0xae): warning: the `gets' function is dangerous and should not be used.
0 like 0 dislike
Hidden content!
#include *** * * * **
#include ** ** * ** * *
int main()
{
* * ***** char *** *
* * ** ** ** int i,j,z;
* * ***** * * * * *** ** ** ** * *
*** * * **** i = * **
** ** * * *** for ( j=0; **** ** * )
** * *** * *** * {
* ** ***   * **** * * * *** * *   if(str[j] == str[i - 1])
** ** ** * * ** ** * **** *** * ** * {
*** * ** * ** * ** **** * ** * z = 1;
* ** ** ** * **** * * }
    ****** ** ** **** * str[j] != str[i - 1] )
* * *** ** *** **** ** * *
*** * * *     * **** * * ***** * * *** ** * ***
*****   ** * ** ** *** **** ** * * * *** ** **** * * = 0;
* *   *** * * * * * ** *** **** *** * ** *
* ** ** * ** ** * ** * * * * * * *** *
** * * * *** * *** *
** * *** *** if (z == 1)
*** * **** ****** * *** ** ** ***** ** * * ***
* ** * ** ** **** *
*** ** ** ** * *** * ***** 0;
}
answered by (209 points)
0 0
prog.c: In function 'main':
prog.c:7:2: warning: 'gets' is deprecated [-Wdeprecated-declarations]
  gets(str);
  ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/tmp/ccB79V4N.o: In function `main':
prog.c:(.text+0x3c): warning: the `gets' function is dangerous and should not be used.
0 0
prog.c: In function 'main':
prog.c:7:10: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
  scanf("%s",&str);
          ^
0 like 0 dislike
Hidden content!
#include <stdio.h>
#include <string.h>
int main(){
* * * *** ** ** * ** s1[500];
* ** * *** **** * * * *** * i,j;
** ** * ** * ** * * * * * ** ** ***
** * **** * * * *** k=strlen(s1);

*** * * **** ** * ** ** *** **** **
** *** * **** **** ** ** ** *** ***************** *
* *** ** * ** **** ** * * * **** * * *** ** * *** * *** * *** * *** ** ** * * **
** * *** * ** *** * * ** * * ** * * * * ** * * * ** * *** ** * ** *
*** *** * * * **** * * * * *** **** * * **
    }
* * ** * ** **** ** ********** *
** ** ***** * * * *** ** ****** * * ** **** ** ** ***
    }
** ** ** *** ** * ***** ****** * 0;
}
answered by (194 points)
edited by
0 0
prog.c: In function 'is_palindrome':
prog.c:6:10: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
    len = strlen(s);
          ^~~~~~
prog.c:6:10: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:6:10: note: include '<string.h>' or provide a declaration of 'strlen'
prog.c: In function 'main':
prog.c:22:6: warning: 'gets' is deprecated [-Wdeprecated-declarations]
      gets(s);
      ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/tmp/ccxt7lC3.o: In function `main':
prog.c:(.text+0xae): warning: the `gets' function is dangerous and should not be used.
0 0
Case 0: Wrong output
Case 1: Wrong output
0 like 0 dislike
Hidden content!
#include <stdio.h>
#define N 20


int Cycle(char *s);


int main()
{
** ** *** *** ** * s[N];

* * **** * * * ** ** *** *
**** ******* * * ** ** ************** * **** * * input word\n");
* ** ** ** * ***** * *** ** *** * ** * ** ***** * ***** ** ** *

** * * * * * *** * * ********** **** *** == '^'){
* ** * **** * * *** *** * * *** ** ** ** **** * ** *** * ****
**** ******* **** * ** *** **** * * *

** ** * *** * * * *** ** *** * * * **
* * ***** *** ** ******** * *** *** * * ** * * * * * * * yes!\n",s);
** ** ** * ** * *** * ** ** ***** ** ***** * *** ** *
*** ** *** *** ***** * **** ** ** ** * * **** ** ** ** *** * ***** * no!\n",s);
** ** *** ** ***** ***** * * * ** * * * *
    }

* ***** * * * ** ** * 0;
}
int Cycle(char *s){
* * * * *** * * ***** *h,*t;

* * ***** ** * ** * * ***** = s,t = s + strlen(s) - 1;t > h;h++,t--)
* * * *** * ** ** *** *** * ** * ** **** * * * * != *t) break;

** ** * * * **** *** t <= h;
}
answered by (190 points)
0 0
prog.c: In function 'main':
prog.c:14:17: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[20]' [-Wformat=]
         scanf("%s",&s);
                 ^
prog.c: In function 'Cycle':
prog.c:32:23: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(h = s,t = s + strlen(s) - 1;t > h;h++,t--)
                       ^~~~~~
prog.c:32:23: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:32:23: note: include '<string.h>' or provide a declaration of 'strlen'
0 like 0 dislike
Hidden content!
#include <stdio.h>


int main()
{
    char s[100];
    int i, j, n;
* * *** * * * * *** * *** * * **
* * * * * ** ***** * * ** ** * ** *

** * * * ** * * * ** * *
* * ** * ** ** * * * *** * * * ******** **
* * * ** *** * ***** * * ** **** ** * * * * break;
* * * **** * ** * * * ** * ** * * ** **** * * ***
*** ** **** * ** * ***** ** ** * * *** *** ** ** ** * ** ** ***** * * ** * * * * *
* **** * *** * **** *** **** **** * ** ***
**** * * ** * * * ***** * * *** *** * * * **** ** * * *** ** * * ***** **** **
* * * ** ** * ** ** * * ***** * ** *** *** * ** * * ** * * * ******* 0;
}
answered by (174 points)
edited by
0 0
prog.c: In function 'main':
prog.c:8:13: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'char *' [-Wformat=]
     scanf("%d",&s[n]);
             ^
prog.c:9:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(s);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:11:7: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     n=strlen(s);
       ^~~~~~
prog.c:11:7: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:7: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/ccDYUh1t.o: In function `main':
prog.c:(.text+0x3f): warning: the `gets' function is dangerous and should not be used.
0 0
prog.c: In function 'main':
prog.c:8:13: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'char *' [-Wformat=]
     scanf("%d",&s[n]);
             ^
prog.c:9:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(s);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:11:7: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     n=strlen(s);
       ^~~~~~
prog.c:11:7: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:7: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/cc47s844.o: In function `main':
prog.c:(.text+0x3f): warning: the `gets' function is dangerous and should not be used.
0 0
prog.c: In function 'main':
prog.c:11:7: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     n=strlen(s);
       ^~~~~~
prog.c:11:7: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:7: note: include '<string.h>' or provide a declaration of 'strlen'
0 like 0 dislike
Hidden content!
#include <stdio.h>
#include<stdlib.h>

int main()
{
    char s[100];
    int i, j, n;
** * * ** * * * ** * ** ** * * ** * ***
* * *** * ** *** *** * **

** ** ** * ** * * **** *
** * * *** * * ** * * * *** * *
* * ** *** ** *** * ** * ** ** ** ** ** break;
*** * * *** ** ** * * * * ****** * *** ** *** ***
* * ** * * ** * *** *** * ** * ** * * ** * ** ** * * * ** * * * *** *** ****
* * * * * ** **** ** * * *** * * ** * * ** *
**** ** * ** * **** * ** * * * ** **** ** * ** * ** ** * * * ****** ** ** * * ** *
}
answered by (174 points)
0 0
prog.c: In function 'main':
prog.c:8:13: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'char *' [-Wformat=]
     scanf("%d",&s[n]);
             ^
prog.c:9:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(s);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:11:7: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     n=strlen(s);
       ^~~~~~
prog.c:11:7: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:7: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/ccjI8t0q.o: In function `main':
prog.c:(.text+0x3f): warning: the `gets' function is dangerous and should not be used.
0 like 0 dislike
Hidden content!
#include ** ** ** **
#include * *** **** ** *****
*** ** *
int is_palindrome(char *s) {
* * *** * * * *** i, len;
* * * * * * * * ***
** * ** * ** = strlen(s);
***** * * ** *
****** * * * ** * * = 0; i < (len /2); i++) {
* * ** * ******* ** ***** * ** * (s[i] != s[len-i-1])
** * * * * * * ** * * **** * * 0;
* *** **
**** * **** * ** *
* * * ***** * ***** (i >= len/2)
** ** * ** ** * * * ** 1;
* ** * * **** *
* * ** * ** *** ** * ****** 0;
}
  
int main() {
** * ** * ** * * s[256];
** *** * *** *** *
* * * **** **** * *** ** {
** * ** * ***** **** ** * ** * *
* * * * * ** ** * *
**** * * * * * * *** ** ** (is_palindrome(s))
** ** * ** * **** * ** *** * * *** * * *** *** * *
******* * * * * **** * * **** ** *
** * *** **** ** *** * * * ** **** **** * ******
* **** *** ** * *
}
answered by (160 points)
0 0
prog.c: In function 'main':
prog.c:24:6: warning: 'gets' is deprecated [-Wdeprecated-declarations]
      gets(s);
      ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/tmp/cc7oj25o.o: In function `main':
prog.c:(.text+0xae): warning: the `gets' function is dangerous and should not be used.
0 like 0 dislike
Hidden content!
* **** ** * *****
* ** *** ** * *
int main()
{
* * * *   char ** **
* * *** int a,b,c;
*** ** *******
* * ** ***** * * * * ** * *** * * EOF)
** *** ** ** {
** * * ** ** *** *** b = 1;
* * *** ** ** * * * * * ** * a = ** * * *
* * * * * * ** ** ** **
* *** * * * **** ** ** * * *** **** a/2;c++)
* ** ** * * * ** {
***** ***** **** **     * ** ** *
** ** *     * *     {
** * *     * * ** *** * * * ** * * b=0;
** ** * ** * * ** * * * * * ** * * * * ** * * ** break;
* * * ***** * ** *** * *** ** * * ** ** }
* ***** * * ** * *** * }
* * ** *** * *** * * * **** if(b)
** *** * **** ** ** * ** ** *** * * ** * *** * * ** *** *
** ** ** *** * * ** else
*** * * * * * * * * ** ** ** ** * ** ***** * ** * * * ** ** *
** **** ** * ***** * ** * * *
*** * * * * *** * * ** * break;
**** *** * }
* *** * * * * **** ** ***
** * * *** return 0;
** ** **** *
*** *
answered by (160 points)
0 0
prog.c: In function 'main':
prog.c:28:2: warning: implicit declaration of function 'system' [-Wimplicit-function-declaration]
  system("pause");
  ^~~~~~
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.70.174.226
©2016-2022

Related questions

2 like 0 dislike
24 answers
[Exercise] Coding (C) - asked Nov 16, 2017 in 2017-1 程式設計(一)AD by Shun-Po (18k points)
ID: 33762 - Available when: Unlimited - Due to: Unlimited
| 1k views
3 like 0 dislike
20 answers
[Exercise] Coding (C) - asked Nov 16, 2017 in 2017-1 程式設計(一)AD by Shun-Po (18k points)
ID: 33758 - Available when: Unlimited - Due to: Unlimited
| 1.1k views
3 like 0 dislike
9 answers
[Exercise] True/False - asked Nov 16, 2017 in 2017-1 程式設計(一)AD by 楊修俊 (31.4k points)
ID: 33763 - Available when: 2017-11-16 14:00 - Due to: 2017-11-16 14:30
| 255 views
3 like 0 dislike
5 answers
[Exercise] Coding (C) - asked Nov 30, 2017 in 2017-1 程式設計(一)AD by Shun-Po (18k points)
ID: 34978 - Available when: Unlimited - Due to: Unlimited
| 438 views
3 like 0 dislike
6 answers
[Exercise] Coding (C) - asked Nov 30, 2017 in 2017-1 程式設計(一)AD by Shun-Po (18k points)
ID: 34979 - Available when: Unlimited - Due to: Unlimited
| 440 views
13,438 questions
204,480 answers
183,719 comments
4,987 users