[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");
  ^~~~~~