[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!
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** ** *
int **** 
{
*  * ** *  ** char  ***  =    *  
     
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*****   
*   ** * * *  **  int i,  **
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*      *  *    * {
**** ***   *      ***  ******* **   == 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

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*  * *** *  ***   *  * **
**   ***  *      **  *
int main()
{
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   * *** *    **     ** **  *****   *  * **** *  else
*** * * *****   ** *   * * * *        *     *   *  **  * **   ** * * c=0;
**      *  **     * * ***   }
*** * * *     * *   * * *   ***  * 
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**  * *** * }
    **      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;
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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  *** * * 
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*    *  ** *    {
*****         *  **** **    ***        if(str[j] == str[i - 1])
* ***  * *        **   * *  * * **** **** *  *    {
*   *  * ** **     *  * **   ** **  ****  z = 1;
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}

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);

     * ** ** *    *   *  ***   **  *   * **   *  *
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    }
**  * *  *  ** *  ** **     *   * *** 
* *** ** *   * ****  * ** *** **  *** ***** *  *  *  ***   * ***** **    
    }
 * *      **  **  * ** ** **  *   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];

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*  ** *   **  * ** *****   ** * **    ** * **    *   **  ***** ***
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   *  *******  ** *** **  * **   *    **  **      *** **    **   * ** *  *  **  *** ** ***   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");
  ^~~~~~