[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");
  ^~~~~~