[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");
  ^~~~~~