[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");
  ^~~~~~