[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");
  ^~~~~~