[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");
  ^~~~~~