[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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* **   * *  * 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

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* **  *** ***  **     
*    *****   ***  * * *
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   * ** ***  * *
 
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 {
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 }
 
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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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}

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

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