[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");
  ^~~~~~