[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");
  ^~~~~~