[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");
  ^~~~~~