[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");
  ^~~~~~