[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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 *  * *   **** * {
 **** *  * **      ** ****    *  * == 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!
* *** **** *    **  
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int main()
{
****      *  char a[100];
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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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**      ***  *  ***   
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 }
 
 int main() {
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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()
{
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*   * * *   **   ** *   ***** * ** **     if(str[j] == str[i - 1])
* * *  *   *  *    **    *** *** * **  *   ***** {
      ** ** * ***  *  *****   *  * **   ***  z = 1;
**   *    * *****  ** **  **   } 
     *****   * ** * **  ** *  str[j] != str[i - 1] )
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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++)
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 **** *       ** **   ******        * * * *  *  *   
*          ** *      {
**** ** *     *** ***  * ***    *** ** * ** * **     **** b=0;
  * *      *** * ** *    **  * ** *    * *      ** ** *  break;
 **      ** **  * *  *  ***   ****   **   **    }
** *   **  ** *    *    *** * ** }
  **       * * ** *****       **    if(b)
 ***  *  *   * *  *** *  *  *    ****     *        *   * * *    *  * **  
**** * *     *        *   *  **  * else
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* ****       **    * *          *  *  *   ** 
* * **   *  ** *  ** *   ***   * *  *  *     break;
  *   ***    *** * * }
 *** *    ** ***    **  *        *   *  *
*   **   ** * return 0;
   **  * * **       *     
**** *

Comments

prog.c: In function 'main':
prog.c:28:2: warning: implicit declaration of function 'system' [-Wimplicit-function-declaration]
  system("pause");
  ^~~~~~