[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");
  ^~~~~~