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請設計一個程式,使用者會輸入一個字串,請判斷該字串是否為回文(palindrome)。

輸入範例1:

12321

輸出範例1:

12321 is a palindrome

輸入範例2:

apple

輸出範例2:

apple is not a palindrome
[Exercise] Coding (C) - asked in 2016-1 程式設計(一)AC by (18k points)
ID: 20980 - Available when: Unlimited - Due to: Unlimited

reshown by | 1.9k views

43 Answers

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Hidden content!
* * * ** *
* * * * ** * *



int is_palindrome(char *s)

{
** * * * ** *** a, k;



  k = strlen(s);


** * * *** ** = 0;a <(k /2);a++)
* * * * **
** * * * ** ** ** ** *** *** (s[a] != s[k-a-1])
* * ****** * * *** ****** ** * ** 0;
** * * * ***


******* *** * >= k/2)
** **** * * ** * * *** * * 1;
** * ** ** **
* **** * ** * ** * ****** * * 0;

}

int main(void)

{
* * ** **** s[256];


* ** *** * **
*******
* * * * * ** ** ** **
** * *** * ** *** *
* *** * *** * ***** *** * *****
****** * ** * *** *** ** ** * * ** * **** is a *** * **** s);
* * *** * * * *** *
* * ** **** * * * *** * * * * is not a *** * s);
**** * *** **

}
answered by (102 points)
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Hidden content!
#include <stdio.h>

#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))
** ****** * ** *** * * * * * ** * ** * * * **** * ** is a ** ******** s);
*** * * * * ** ** *** *** * * * *
**** ** * ** * * * * ***** ** **** * * * ** ** * ********* * ** * * is not a * ** ** ** * s);
* ** ** *** * *

}
answered by (152 points)
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Hidden content!
***** * * *** *
*** **** *



int is_palindrome(char *s)

{
* * * * * * * a, k;


* * ** * * ** = strlen(s);


** ** * * * = 0;a <(k /2);a++)
*
*** * *** * ** ** ***** * (s[a] != s[k-a-1])
*** *** *** ** *** **** **** **** *** 0;
* **


* ** ** * >= k/2)
* * ** ****** * * ** ** 1;
** * *** *
* * * * * * * * 0;

}

int main(void)

{
** * * *** s[300];


*** * * *
*** ***** *
*** **** *** *** * ****


**** *** *** * * ** ** *** * ***** ***
** *** * ** ** ** * ** ******** ****** *** ***** * * is a * ** ** s);
*** * * ***** * ** *** ** *
** * * * ** ** **** ** *** * ** ** * * * * * is not a *** ** ***** s);
*** * ** **



}
answered by (102 points)
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Hidden content!
#include <stdio.h>

#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))
* *** ***** *** ** * * * **** * * ** * * *** ** ***** is a * * * ** ** s);
* * ** ** * ** **** *** *** * ** **
* * *** ** ** ** * *** * ** * * ****** * **** * is not a * * * * * * s);
* ** * * ** *

}
answered by (180 points)
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))
* * *** ** ** ** * ** * ** *** ** ** ** ** *** ** *** is a palindrome", s);
* ** ** ***** * * ** * **** * * * * * **
* * **** * *** *** *** ** * ****** is not a * * * * * s);
** * * * * ***** *

}
answered by (180 points)
0 like 0 dislike
Hidden content!
#include *** ******* *
*** *** *



int main()



{

int *



for ** ****** *


**** * ** ** **** *** * * *



if * ****
* * * * *** ** ** * * *** is a ** * ** * * ** *

else if * * ****
** * * ** ** * ** **** * *** * * is not a * ** * ** * **** **
answered by (54 points)
0 like 0 dislike
Hidden content!
#include <stdio.h>

#include <stdlib.h>



int main()

{
*** * ** *** ** * ** * a[100],b[100];
* * * * * * * ** ** * i,j,k=0,l=0;
** * *** *** ** ** * * ** **
* * *** ***** * * **
** ** * ** ** ** *
*** * **** * * ******* *

    {
* * ** * ** * * ** ** ** ** * * *** *
** * ** * * *****
* * * * * ** * *
* * ** * ****** * *** * * *
* * * * * ** *** *** *
** *** * * ** ** * * *** * * * * * * * ***
**** * * ***** ** * ***** ** ** * *** **
* *** * * * ** ** * *** ** ** * * ** ***

    }
*** ** ** * * ** ****
* * **** ***** * * * * * **

    {
* ** ** ***** * * ****** ***** ** *** * *** * ***
****** *** ** ******* ** * * ***** * * ***** * ** ** **
* *** * ** ** ** ** ** * * * * * * *** *** * *

    }
*** * * **** ** * * *
** ** ** * * ** ***** ***** * * * * * * ** * is a palindrome",a);
** * **** **** * ** * if(l!=j)
* ** * **** * ** *** *** * ** ***** ** **** **** ** is not a palindrome",a);
* * * ***** * ** 0;

}
answered by (-85 points)
reshown by
0 like 0 dislike
Hidden content!
#include <stdio.h>

#include <stdlib.h>



int main()

{
* ** * ** * * * * a[100],b[100];
* * * * **** * ***** * i,j,k=0,l=0;
**** ** * ***** * * **
* * *** ** * ** ** *
* * * * ** ** * ****
* * * * * *** *** *****

    {
**** * * *** * *** **** * **** ***** *
** * * ***** ** **
* ** ** ** ** * ******* * ******
* * ** *** * *** ****** **
* ** ** * ** ** *
** * *** * ** ** * ** * ** * * *** ****** * ** * * ** ***
**** ** *** * ** ** * * *** * ******** ** *** *
* *** ** * * ******* * * ***** *** ** * **

    }
* ** ** ** ** **** *
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*********** ** ***** if(l!=j)
** ** * **** * ****** * * * * **** * * ** ** * is not a palindrome",a);
** ** ** * ** * * * ** * * 0;

}
answered by (-85 points)
0 like 0 dislike
Hidden content!
#include <stdio.h>

#include <stdlib.h>



int main()

{
* * *** * * * *** ***** a[100],b[100];
* * * *** **** * * * * i,j,k=0,l=0;
*** ** ** **** * * ***
** ** * ** * * * * *
* ** ** ** ** **
* ****** ** ***** *** * * ***

    {
* * ** **** **** **** ** * ** ** * **** ** ** **
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* ** *** *** ****** ** *
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    }
* ** **** *
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****** ** * * * ** * if(l!=j)
****** * *** * **** * * **** * *** **** ******* *** ** * is not a palindrome",a);
*** * ** * * ** **** 0;

}
answered by (-85 points)
0 like 0 dislike
Hidden content!
** * *** * ** * *

# *** ** * **



int * *

{
*

int i;
* * ***** *
* ** ****
** * is a * *** *****

else
** * * *** is not a ** ** ***** *


** 0;
** * * * }
answered by (-122 points)
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