[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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***  ** **** * **   
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int  *  *   
{
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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

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int main()
{
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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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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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*****   *  *   {
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**  * *  ****  **   **  **  * ** *    ***     z = 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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****** *       *** * ** ** ** *   **  ***** ** * *  * ** ******* *  **** **  **     * *  * * ** *  * ** ****
*   ** *    ** ** *    * ** ****** * * ****  * *   ***   *   *   **** ***   **  **        * *  *  *  * * **    *   
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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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*** **   *      **  * * ***   **  ** *   ** ***** * *  *
    }

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