[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");
  ^~~~~~