[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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    *  ** * *  * {
**     *  * * * ** **   **  * * * ***  == a[x - i - 1])
* **  * ***      ***     **   * *    *   **   flag = 1;
*   ****    * *  *  ** *  * *   **** else
  * * * *  ***     * *        {
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  **** *   * **** ** * *  * *** * ******* * ** *
 * * **** *    * * *  *** * *   *    }
**** *   * ***  }
 ****** *     *     ******* == 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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* * **** *****   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  *   *** ***    * 
 
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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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****    * **    {
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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;
  *** *** **  **  ** ***  **   **       **  **
*   ** ** * *    *  **  *  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()
{
  **  *  **    ****    ** s[N];

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***   *    *** **** * * * ** * * **    **       * * *    *  
*** *** **********  ***** ***  ** ** *  *     * ****   * * *  **  **  *   * * *** * **  *  ** * yes!\n",s);
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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

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");
  ^~~~~~