[AD] 20171116 作業 1

Question

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

Answer 1

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;
}

Comments

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'

---

Case 0: Correct output
Case 1: Wrong output

---

Case 0: Correct output
Case 1: Wrong output

---

Case 0: Correct output
Case 1: Wrong output

---

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
  }
  ^

---

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
  }
  ^

---

Case 0: Wrong output
Case 1: Wrong output

---

Case 0: Correct output
Case 1: Wrong output

---

Case 0: Correct output
Case 1: Correct output

Answer 2

Hidden content!
  *  ******* **   **  
** **     *******  *
int main()
{
 * **   *    char a[100];
** ***       ** * ***  *   * * *      * * * ***
*     **  * {
            *  *** * * **   *  **  int   *   
****   *  ****  *     ** ***   *   * 
****   * * *  ***  ** *  *   int test=y/2;
* ***** ** * **     * *   **  *  **  **  **  *  **  * 
*  *** ** *   * **   {
 *****        **   * ** **  **
** * *     **   *    ****   * *        *   **   c++;
*   *      *** *  ***   ** ***  ****  *  * *  else
   * * * *  **** *  * * **  **  * *   *  *  *  * *  * *    * *   *  c=0;
* **  *  *   **  ** * * *    * * **  }
 *    * *   ** *     **     *  *      **
 * ** *  **  *** * ***  *    ****     ***  ** ** *     *   * **** *     
 **** ***  *     ***   ***   else
** * *** * *     **  *              * * *   ** ***    * ***** * **       
    *   ***** }
* *** *** *    *  return 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output

---

Case 0: Wrong output
Case 1: Correct output

---

Case 0: Wrong output
Case 1: Correct output

---

Case 0: Correct output
Case 1: Correct output

Answer 3

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);
** *** *      * * *  
    *** **   ******   *  *   

Comments

Case 0: Wrong output
Case 1: Wrong output

---

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.

Answer 4

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;
}

Comments

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.

---

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);
          ^

Answer 5

Hidden content!
#include <stdio.h>
#include <string.h>
int main(){
** **** **   *** * ** **** s1[500];
  ** * ** ****  *    *  * i,j;
 ** * * ***    *  ** *    ***   *** *** * **   **
   *****   * *  *** **   *  k=strlen(s1);

 *****  * **  ******* * *  * *   **   *  *********
 ****** *  * *****   * *  * ** * *  **   * **   *  ***   *** * * ** 
 * *  * **    * ** * ** **** ****     *        * **     **   *    *  *  *     *  ****   * ***     * 
  **** ***    **  ******  ***   *  ** * * ** ***  ** **    *  *   * ***  *  * ***       * *  **    ***********
**  * *    ** ***    * ** ** ******  **   *  **  ** **  * 
    }
  *    ****** *** ****** *  *     
** **** **  *    **    * * ** *** *    **    * * * *  * ** *  **    ***     
    }
*          * * *  ** ** **   **** *  0;
}

Comments

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.

---

Case 0: Wrong output
Case 1: Wrong output

Answer 6

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;
}

Comments

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'

Answer 7

Hidden content!
#include <stdio.h>


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

   * * *     **    ** *  **   ***** 
****    ** *     *   *    ** *  * ****  *  **  **
*  *  ***    *** **   ******** **  * **** *  *   **     *  **  **   break;
 *  ****  ***    *** **  **** *  ** *   * ***   * ***** ***  
*    ** * *  * ** *****     ** *      * *  *  **  **** * *   **  *  *** ****   *  *****      *   *
 * ** *     **** ******    **** ***  *   * *     ****
   *    ** *  *  *  **  *** **   *   * * *  ** ***  * ** **** * **  * ** * **** ****   *     * * *   
*** *  **  *** *   * * * * ****  *  * * *  ***** ** **    *** *   **  *  *  ***** * 0;
}

Comments

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.

---

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.

---

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'

Answer 8

Hidden content!
#include <stdio.h>
#include<stdlib.h>

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

** * *   ** ** *  **  * * * *    *  *
***   ** *    *  ***** * *  **  * **         **    *
**   ***** **** * ********    *****  *  ** **** ** * **    *  break;
       * * *  *   *  ***** ** ** *  *  * **  ** *   ******** ****  
* ** *  ***  *   ********   *    *    *   * * * *   *  *   *********   *    **** *    **** * ** * **  *
 ***   *** *  *  *    ** ** *  * *     **** *  *** *** * *      
* *** *** * *     *   * ** *   ***   **   * * * * *    * *****  * ** *  ***   * **** ***  ** ***        
}

Comments

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.

Answer 9

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)) 
* *    * ****    *   ***    *** * * * **** **  ** * ****  * **** * * 
*   *     * * ** * *  **** **** **** 
**    ** * * **  *  **  *     *  *  * ** * *** ** ***   *  **  **   
 ****  * ******  ** **  
}

Comments

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.

Answer 10

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;
 **  *  ** ****      *
*  *** 

Comments

prog.c: In function 'main':
prog.c:28:2: warning: implicit declaration of function 'system' [-Wimplicit-function-declaration]
  system("pause");
  ^~~~~~