[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");
  ^~~~~~