[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");
  ^~~~~~