[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");
  ^~~~~~