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