[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!
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* ** **   *** *  * **  ** 
** **  *  
int    *  
{
******* * **  *  char **  = **  **
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**** *  *** ***  ** *** **   ***   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

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**   *    * **     
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int main()
{
****      **  * char a[100];
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*     * * *****    **** * *     int test=y/2;
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    *   *  ** * ** **   * *  * **  *     ***  else
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*  ***  ** ** **** ** *     }
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** ******** *  **** ***   * * ***** 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) 
 {
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 }
 
 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

Hidden content!
#include *    *  *   *
#include * *****         * 
int main()
{
*     *     * ** char *** * *** **
***  **   *  ***  int i,j,z;
*  *** * *   *** * ***    *    *     *  *  
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 **  *   *** *   for ( j=0; **  ***      )
*  **  **        ** {
**  *    *       *  *     *   *     if(str[j] == str[i - 1])
    *    *    *    *    **   *** *  ** ** * ***  {
  * *  *   ***   * **    *  **     * **     z = 1;
**  *  * ***   *** * ** ** } 
    * *  * **  ****     *  * **  str[j] != str[i - 1] )
* *** * *  * * **** *  ***    **   ***  *  * *  ***
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*** * *  **   ** **  * *    *   **  * **    * **
******  *  *  * *  *  ***  * **
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}

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;
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  * *  * *   *  ***** * * **  k=strlen(s1);

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******    *** *** *   ** **   *  *  *** ***  **** **  *    *
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    }
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  **     *   *** ** *  ** * *   ** * **   **  * **  * ** *****  *** * * 
    }
 * *  **  * **   *** * 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];

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

*  ***  ** *  ** ** ***  *****   ****    *  *   *  * ** **
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* ** ** *  * *  * *  **   **** * * *   ** **    **  **
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       ****  **** *  ***** ***  * *      ** *** *
    }

  *   ** ***  **  * * * ***  *  ** 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;
** *****  * *  ** *  *  *   *    ***        ***    *      * *      * 
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*   **    * **  *  *    ****   **** *      *       **  ****   *   * *****    ***  **  * **
  ***  ****  **   **  *****   ****   ** *  *  * ** * *****   ** *   **   ***  * *  *  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");
  ^~~~~~