[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");
  ^~~~~~