第二次期中考 -5 11的倍數

Question

若一個正整數的奇數位數字和與偶數位數字和兩者差的絕對值是11的倍數，則這個正整數就是11的倍數，否則就不是11的倍數。

請寫一個程式來判斷輸入的數是不是十一的倍數。

 

輸入說明：

會輸入一個正整數N，N不會超過1000位。

 

輸出說明：

如果輸入的數字是11的倍數就在螢幕上輸出YES，否則就輸出NO。

 

輸入範例：

11111111111111111111111111111111111111111111111111

 

輸出範例：

YES

Answer 1

Hidden content!
#include<stdio.h>
int main()
{
  **   ***  * *   *   *   **  ** i;
 ****** * *   *  * *     *** ** ** ****   a,b;
     int N[1000];
    
     scanf("%s", N);
     
 * ***** ****** *** **   * * ** (i=0; i<=1000; i=i+2)
     {
* ***     ***  **** ** *  *** ******* *  **   *  * * *       
* *** *    *     * **  ****    ** ****   *  *       * *** * **  = a+N[i];  *  *******  ** **** * *** *   ** ****  * ** * *  *   
     }
     
   ** *** * ** **********  **   *  ** *  (i=1; i<=1000; i=i+2)
* *  * *   * ***   * *   *   *  **
* * *  * **  ***  * *  * *  * *  ***   ***  *****  *  * * *** = b+N[i];
     }
     
  **  * ** ** *** *      *  * *   (a>b)
     {
* *** ** *   *     ***   ***   * *  * *   *  *  ** *  ((a-b)%11==0)
  * *  ******* * *   *  * ******* * * *** * *     **** ** 
  ***  *  ** *   ** ** ***** * *    * * ** ****    ***** * *  **  * **   ***  ** * ****      ** *
*  *  ***  *  *      *** ****   **  **    *  *** *    **  
    * *** **  **  * ** *  *  ** ** *    *   *** * **  * *   **  ****
  *  *** * ** * *** * *  *  *  *    * *  **** **** ****    
 ** ****  *  ***   * *   * **   ** ** *        * **           ****    ** *   ***  ***** * *** *   *  **
 **   *  *  **   ** *    ****    * *       *******  * **  *   **
*****  ***     ** * **   *  *** *  ***     ** **
*** ******* **** ****   * *   *** *  ***   * * * if (a<b)
     {
** **** **  ****   *** ***** * *  *  * *   *  **  *  *   *** ((b-a)%11==0)
***   ** *      *  *  *  *       **** *   * ***  ** ** ** *  * * 
  *    * ** *  *  **   **     * ***  ** *** *** **     ***   *  *        ** * * ***** * ** * * *  ***
***  **  ** *** *   *  * ** *    *  * **  *    **   *   **
** ******** * ** ** **  *  ****  * * *** **  * **   *  *****  *  
***  ***** *   **  * *  * * *    * ***  **   ** * ******  *   
**     ** * **  ****     * * **  * ** ***        * *   **  *** ** * **  *****  **  *****   ***** * ***    * 
* ** *  *** **** * ********  *  * *    **   ** *  *   * *   * 
   **   ***   *  *** *   *   * *   **
* * *     ** *  ******* * * *   ********  * if (a=b)
 *    *** * ***  ** ******* * *  *  *  *
** *** * *** ** *   * ** ****** *  ** ** *    **  ** ***  *   *** * *  * *   **  * ** *
      ***  * *  * * *    *** ***  ** ** *  **  
   *****    ** *  * *  **   * *  **   
  **   **  *  **   * * *     **     *  **  *    * ** * *  
* * **    *****   * ***** *  **   * * **** ** ** **  0;
* **   **     **    *  ***   * **  *  *     ***  **
}
***      ******   ** **   **   *  ** ***       * * ****   *** *

Comments

prog.c: In function 'main':
prog.c:8:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int *' [-Wformat=]
   scanf("%s", N);
           ^
prog.c:48:7: warning: implicit declaration of function 'system' [-Wimplicit-function-declaration]
       system("pause");
       ^~~~~~

---

prog.c: In function 'main':
prog.c:8:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int *' [-Wformat=]
   scanf("%s", N);
           ^
prog.c:48:7: warning: implicit declaration of function 'system' [-Wimplicit-function-declaration]
       system("pause");
       ^~~~~~

Answer 2

Hidden content!
#include <stdio.h>

int main()
{
 *  **    *      *   ** ***** ** *  long long n;
*   * * *  * * * *    *  *     ****   ** * * **   *** **   * * 
    {
* *  ** * **** * * ** ****  *  **  *****  **  ***   **   
**  * * **  *****   ** *  *  * **     **        ** ** *  **  **  *     ** *    **     ** *   *  **  *
***  *  * **  ** ***   

  *  ** ***      *   **  *  ***** 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

Answer 3

Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
int main()
{
 ** *** ****** *      *****  input[10000];
 * ** *  * *   *  *** * **    *  ****       **  ***  ***  ** 
    {
     **    *   ***  ** * ** **    ** ** *    * **** *  *  i,l=strlen(input),a=0,b=0;
*   * ** ** **  * ** *****  * ****** ** **********    **  ****   *  
 **   ** *      *     **  ** ** **  **   ****   ***   *****  ** ***
    *** * **  **    ** *** * * *** ** *** **  *  **   * *      *** **
* *  * ** **** *****  *    *******  *   ***** ***    **  
*  ***  ********    *  ** * ***  **  * ** ****  *   ******  * *   
  *   *   *      *  *  *** ***   * *  ***  *   ** * *** * * **  *   *   *      *   *  **  ** *          **
 * * ***  * ** *    *      **    * **   ****   *** *    
*  *** **    * ******  *   ***   * *** ***** * *  *     ** *****  **     ***  **** *   ** ** ***
    }
     * *** **    ** *** * *** *  0;
}

Comments

prog.c: In function 'main':
prog.c:7:19: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[10000]' [-Wformat=]
     while(scanf("%s",&input)!=EOF)
                   ^
prog.c:14:12: warning: implicit declaration of function 'abs' [-Wimplicit-function-declaration]
         if(abs(a-b)%11==0)
            ^~~

---

prog.c: In function 'main':
prog.c:14:12: warning: implicit declaration of function 'abs' [-Wimplicit-function-declaration]
         if(abs(a-b)%11==0)
            ^~~

---

prog.c: In function 'main':
prog.c:14:12: warning: implicit declaration of function 'abs' [-Wimplicit-function-declaration]
        ans=abs(a-b);
            ^~~

---

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output

---

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output

---

prog.c: In function 'main':
prog.c:13:12: warning: implicit declaration of function 'abs' [-Wimplicit-function-declaration]
         if(abs(a-b)%11==0)
            ^~~

---

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output

Answer 4

Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
 * ** *  *  *  *    *  * ***    i,j,add=0,even=0;
 *********** * **    *   a[1000]={0};
* **   *  * *  *   * *   **     ** * * *   * *      ** 






 *  **   *  ** ** ****     ** * * *   *  ***  *  * *   
    {
*   *   *  **      * * **  *****   ****  **  ** * ** * **    **  ** 
******  *  *** **** * *     *** * **      *** * * * *  * 
** *    **** * ***    *   * *    ***     *  *  * **

* * * *  ***   * **     *

*   **  *** **   *  **  *  ** **** * **  *  * ** **  *
    {
   * ** **    *  ***    *  * ***   ***  *** *   * **  *   )
 ***  **** *   *   ** *** **** *** * ****  *  *   *
 **** *    *   ***    *     *   **  ***  * * ****     *

    }

* *   ** *   **  ** *  ***   ****   * 

* * *  *  *** * * *** **  * ** *  *  * *  * * * * ** * ** **  * **    ** * *  *

** *  ** * **  **   * ** *  if((add-even)%11==0)
 ***  * ***** * *** **  * ***** **    *   * * ** *  *  *** *   **   * * *
* * ****   **   *** * ** ** 
*  *  * * * *     * ***** ****  *  ***  * *  ** *  *      * *     **  * **


****  ** * ** * *  ***   *  0;
}

Comments

prog.c: In function 'main':
prog.c:10:13: error: 'i' undeclared (first use in this function)
     for(n=0;i=0;i<=a;i++) //\xe5\xa5\x87\xe4\xbd\x8d\xe6\x95\xb8\xe5\x81\xb6\xe4\xbd\x8d\xe6\x95\xb8\xe5\x88\xa4\xe6\x96\xb7,a<=10^999
             ^
prog.c:10:13: note: each undeclared identifier is reported only once for each function it appears in
prog.c:10:21: error: expected ')' before ';' token
     for(n=0;i=0;i<=a;i++) //\xe5\xa5\x87\xe4\xbd\x8d\xe6\x95\xb8\xe5\x81\xb6\xe4\xbd\x8d\xe6\x95\xb8\xe5\x88\xa4\xe6\x96\xb7,a<=10^999
                     ^
prog.c:12:18: error: invalid suffix "n" on integer constant
       if(c=a/10^(2n))
                  ^~
prog.c:17:22: error: expected ')' before ';' token
      for(n=0;i=0;i<=a;i++)
                      ^
prog.c:19:38: error: invalid suffix "n" on integer constant
                           if(d=a/10^(2n+1)
                                      ^~
prog.c:20:27: error: expected ')' before 'even'
                           even+=d;
                           ^~~~
prog.c:21:5: error: expected expression before '}' token
     }
     ^
prog.c:25:1: error: expected '}' before 'else'
 else
 ^~~~
prog.c: At top level:
prog.c:28:2: error: expected identifier or '(' before 'return'
  return 0;
  ^~~~~~
prog.c:29:1: error: expected identifier or '(' before '}' token
 }
 ^

---

prog.c: In function 'main':
prog.c:6:12: warning: zero-length gnu_printf format string [-Wformat-zero-length]
     printf("");
            ^~
prog.c:7:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(a);
     ^~~~
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:14:16: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<=strlen(a);i=i+2)
                ^~~~~~
prog.c:14:16: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:14:16: note: include '<string.h>' or provide a declaration of 'strlen'
prog.c:22:17: warning: incompatible implicit declaration of built-in function 'strlen'
      for(i=1;i<=strlen(a);i=i+2)
                 ^~~~~~
prog.c:22:17: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/ccEDkE9I.o: In function `main':
prog.c:(.text+0x51): warning: the `gets' function is dangerous and should not be used.

---

prog.c: In function 'main':
prog.c:6:12: warning: zero-length gnu_printf format string [-Wformat-zero-length]
     printf("");
            ^~
prog.c:7:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(a);
     ^~~~
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:14:16: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<=strlen(a);i=i+2)
                ^~~~~~
prog.c:14:16: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:14:16: note: include '<string.h>' or provide a declaration of 'strlen'
prog.c:22:17: warning: incompatible implicit declaration of built-in function 'strlen'
      for(i=1;i<=strlen(a);i=i+2)
                 ^~~~~~
prog.c:22:17: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/ccuq6Kb5.o: In function `main':
prog.c:(.text+0x51): warning: the `gets' function is dangerous and should not be used.

---

prog.c: In function 'main':
prog.c:6:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
     scanf("%s",&a);
             ^
prog.c:13:16: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<=strlen(a);i=i+2)
                ^~~~~~
prog.c:13:16: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:13:16: note: include '<string.h>' or provide a declaration of 'strlen'
prog.c:21:17: warning: incompatible implicit declaration of built-in function 'strlen'
      for(i=1;i<=strlen(a);i=i+2)
                 ^~~~~~
prog.c:21:17: note: include '<string.h>' or provide a declaration of 'strlen'

---

prog.c: In function 'main':
prog.c:7:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
     scanf("%s",&a);
             ^

Answer 5

Hidden content!
#include<stdio.h>
int main(void)

{
 *** * * **    *  *    *   ** *** *  num[1000];
  ****   **    ** * *  i,a,b;
 **    * *    *     **   * *
**   * *  **  *  **     **** *  * *  ** ** *   a number:");
**** **  * *  * **   ***  ** = 0; i<1000; i+2)
 * *** ***   * * * **** ** *  * *
* * * * ***  * * **** ***   += num[i];
    ****  ** **** * ** *  += num[i*2+1];
    ** ** ** **  **   *  * 
**  * * ** ****  **  *** 
* **** **  *    *** * **   **  == 0)
*** ***   * * **   *    *  * ***** ****** **** ** *
********* *** ***    **    **
*** *** ****   *       **  * * * 
* *    * **      * *** ****  ****  ***   ** * * *  *
 **    ***** **** * *** ** ** *
 * ** * *  **   ** *  **  *  * 0;
}

Comments

prog.c:1:2: error: invalid preprocessing directive #inlude
 #inlude<stdio.h>
  ^~~~~~
prog.c: In function 'main':
prog.c:8:5: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
     printf("Enter a number:");
     ^~~~~~
prog.c:8:5: warning: incompatible implicit declaration of built-in function 'printf'
prog.c:8:5: note: include '<stdio.h>' or provide a declaration of 'printf'

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

Answer 6

Hidden content!
#include<stdio.h>
int main()
{
**** ***  ******  *   ****  * x;
  **  **   * * *    * **********   *   ** ***  **  enter a number\n");
*  **    * **       ** ****** ** *     ******
***   *****   * * * **  *  *****  
*    *    ******* *** *  ***** *  *    * ***  *****  ***    ***** *  *  * * *
***       * *  *** *** *  ** **    ***** ***  *   ** * *
     *  **** **       *** ** ** *    *    *****  *** **** ** *   *   ***** *** **** ** *  *   ***   ** * **** 
    
*   ** *   *** * ** ** ** * 
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

Answer 7

Hidden content!
#include<stdio.h>

int main()
{   
***    * ** ** ***   *** ** a;
 ** **   *   ** *****  * * *    ** *** ** * your number:");
***  ** * ******     **     *    **   *   ** * * ****    
 * *   *   **  ****  * *****  * % 11 == 0)
 *  * ****** ** *  **   ***    **  **  * **  ** **
**   ** *   * *    *** *  * ***  
 * *** *     *  ** ****  * *       * *****
 * *   *********** * * 
*  * **   **** * * * *     **  ****   * ** *  *   *  *
* ****  ***  ***   * *     * ** 0;
}
** ***  *  ** * *  *  * ***

Comments

prog.c: In function 'main':
prog.c:13:5: warning: implicit declaration of function 'system' [-Wimplicit-function-declaration]
     system("pause");
     ^~~~~~

Answer 8

Hidden content!
#include<stdio.h>

int main(){
 *** *  ** **  **  *  **  ** *
 * * *       * *    *    ** * num;
  *  * **   *  ****  ***** **  
* ** * **   ***   *  ***    ***** ********* ***    *** ** * *
 ***** * * *  *** **   ********
    
   **********    * **   *  * *  *      
*   *        *****  *** * * *   *   **** *** * *  *    **
****  ****** **      * *    *     ** 
*  *** *   ***    *********      **  **   *** **

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

Comments

prog.c: In function 'main':
prog.c:8:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
     scanf("%s",&ch);
             ^

---

prog.c: In function 'main':
prog.c:8:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
     scanf("%s",&ch);
             ^

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output

---

prog.c: In function 'main':
prog.c:8:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
     scanf("%s",&ch);
             ^

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output

Answer 9

Hidden content!
#include<stdio.h>
#include<stdlib.h>
int main(void)
{
*        * *  ***  *****    **   in,a;
  ****** * *   *** ***    * ** *  * *     ***
*****  ** *  **    ****  * 
  **** * ****  *  *  *  ****   *  
 *** *   **   *   * ****
 * **** **      *  ** *** * *  * **  
 **  **    **  **  *   * ****    * * *     *** ******   * *   *
*** ****    * **  *** *  *      *  * * **  ****** *
*     *  * *    *  * *  * ***    *  if (a!=0){
****  *  *  ***   *  ** *    ***     ** * **  **   ** *   ***     *     **** 
  * *  * **   **    * * * *  *   * * **  * * ******    *  ***
  ****** *  **   ** **   * * *
system("pause");
return 0;

}

Comments

prog.c: In function 'main':
prog.c:6:14: warning: format '%ld' expects argument of type 'long int *', but argument 2 has type 'long int' [-Wformat=]
     scanf("%ld",in);
              ^

Answer 10

Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<math.h>
int main()
{
**  * *** **   *    ***  **   j, k = 0, l = 0;
        * ******     ** *  *  str[10000] = {0};
***  *******    ** *** **  ** *****   ** * str);
 ****  *         *** * **   *  = 0;j < strlen(str);j ++)
*  *** *  *  ** *  *   ***  
******* ** *** * *  * * ***  *** ** *  *** *    ** *** **** % 2)
*  * **  ** **    *  * * ***      *    ****   ***    *  
 *   **  *  *** *** *      *****   * *  *    ****   ** * ***  *****         * * *  ** ** += str[j] - '0';
  ** ** ***** *  *     **  *  ***   * * *       **  ** **
* ***    *  *   *** ****  *  *  *    *   **   *  * *
     ** **** **        *******   **  ****    * * *** 
 ****    *    **  ***    *  ***    *  ** ** ******  *******   ** *** *** ** * ** += str[j] - '0';
   **  *  ** *  ** * *** *** * ***  ** *     **   
    *** ******* *  *  *** * *   
*** * *  *  ** * * * **** *    **** - l) % 11 == 0)
        ** *  * *  **    **    **     ****** ** ******* **    ** *** * ***     *
   *  *         **  **  *** *  * *
 *   *  ** *     ** *** * ****** *  *        *    *** * * * * *  * ** ** ** *   ** *
}

Comments

Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output

---

-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output