[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");
  ^~~~~~