[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");
  ^~~~~~