3 like 0 dislike
6.7k views
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
| 6.7k 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:108.162.241.185
©2016-2025

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
| 5.7k 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
| 5.3k 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 (30k points)
ID: 33763 - Available when: 2017-11-16 14:00 - Due to: 2017-11-16 14:30
| 1.2k 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
| 2.1k 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
| 2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users