[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");
  ^~~~~~