[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 *    * 
{
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*    
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**** * ** *  * int x =  *   *  
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*  **   *        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()
{
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****   * **   *    * *** *** *    }
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 *  **   *   **** ** *   ***  else
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   *     *** * * }
**   ***    * **   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;
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* ** **   *   ****
*****       ***** * *  * ** = 0; i < (len /2); i++) {
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 }
 
 int main() {
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*     * *** * *  *
* * *  **** * *   * ** *   {
   *  ** *  * * ******   ** ** ** *  ** * 
* * *** * ***   * *****  * ***     
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****  *  *****      ****     *     *** *** * **     ** *    *   * 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 *** **   
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  *** *   ** *** ** * **  * ***  *    if(str[j] == str[i - 1])
     * * * ** *   *  ** ****      ***** ***   * *  * {
*    * *  * **  * *   *  *  * *     *  * *  **  z = 1;
***** **  *  *   *** * ** **  } 
       **   ***  ** ****   *  str[j] != str[i - 1] )
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*  **  * *  *          **** **** *      ***  ** * * **  *** *         *  
*   * *         ****   * * ***  *** *** * * ****   **   * = 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

Hidden content!
#include <stdio.h>
#include <string.h>
int main(){
  ** *  **    **   *  ****   s1[500];
** *  *** ** ** **         ** i,j;
*** * *** **      ** * * *   **    **    ***
* *** ***     **  * **** ***** k=strlen(s1);

**** ***  * * *** *   *   * * *  ****  **      *  
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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()
{
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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;
 **     ** ** * *  ***     *  * * * * ****    *  ***  *** **
***  * **  *   * *  ******  ** * *  * ***      * ** * ********  *   *** **   * ***** *  *  ***  *  ** * *** *
* *** * * * * *  *    *   **** *  *  *     **  *   ***   
**  ** *    * ***** ***   ********  **   * ** * *** *  *   **         *** ** * ***  * *  * *  * * * *
* **** * * * **   ** *   *   ** *  * *   *  ***   **** **  ** *** *  *   *   *    * **  *    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");
  ^~~~~~