[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");
  ^~~~~~