[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");
  ^~~~~~