[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");
  ^~~~~~