[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

內容已隱藏
  *  **  *  **  **  
*** *    **** *   ** *  ** 
**  *** 
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

內容已隱藏
***  **** *** ***  * 
* **  **** * **  *  
int main()
{
* * *  *   ** ** *  char a[100];
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*****   *  ***** * ** *   * * 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

內容已隱藏
#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];
     ****   *  *   
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*  *  * *  *   ****  ** *  * **  *** ** * ***   
   *  ** **   * ***   *** *    *
 * *  * * *** **** *  **** ***** (is_palindrome(s))
 *** ******  **  ***     ***   * * *  ** * * *  *  * ****** *** ***  * s);
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  **  *  * **  *    *   ** **

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

內容已隱藏
#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;
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*   ** *   **   ** **   * *   ** ** ** *  ****   ****  *  * 
* *  * ***   ** *   *  *
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**** * *  *** *  ** *  *   *  ***** ** **    *  ** ***  ** 
* *      ****   *** *****  *****
** **  *******  * * ** *      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

內容已隱藏
#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

內容已隱藏
#include <stdio.h>
#define N 20


int Cycle(char *s);


int main()
{
****      ** **    *****    s[N];

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 ***  **   ***   *  *****   * *     *** * *   * * ***     ** * * **** == '^'){
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** ***       * *   * *** ** *   *    * ** **    

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**      *  ******* *   ***     *** ******   **  *     **** ** 
** *   * ** *  *     **   ***  ** *** ** * **  *  ** ** * *  ****    ***    **    ***  **    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

內容已隱藏
#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

內容已隱藏
#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

內容已隱藏
#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

內容已隱藏
*  ****  **  **  ** 
** ** **  ***         
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");
  ^~~~~~