[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");
  ^~~~~~