Midterm Question 2

1 like 1 dislike
8.6k views

The 13-digit International Standard Book Number (ISBN) is a unique code that identifies a book commercially. The last digit is a check digit used for error detection. To calculate its value, each digit of the first twelve digits is alternately multiplied, from left to right, by 1 or 3. The products are summed up and divided by 10. The check digit is the remainder of the division subtracted from 10. If it is 10, it becomes 0. 

ISBN檢查號的計算方法: 前12個數字，奇數項 乘以 1 ， 偶數項乘以 3

For example, assume that the first twelve digits are 978960931961.  

假設號碼前12位是978960931961

(a) (9*1 + 7*3 + 8*1 + 9*3 + 6*1 + 0*3 + 9*1 + 3*3 + 1*1 + 9*3 + 6*1 + 1*3) = 126 

(b) The check digit = 10 – (126 % 10) = 10 – 6 = 4  

檢查號 = 10 - 餘數 = 10 – (126 % 10) = 10 – 6 = 4  

So the valid ISBN is: 9789609319614

Write a program that reads a 13-digit ISBN and checks the last digit to see if it is valid or not. 

寫一個輸入13位ISBN號碼 判斷最後一個數字是否檢查碼即可

#Try 1:

Input:

9789609319614

Output: 

Valid ISBN

 

#Try 2:

Input:

9781482214505

Output: 

Valid ISBN

 

#Try 3:

Input:

9780132936493

Output: 

Invalid ISBN

 

[Exam] asked in Midterm by (12.1k points)
ID: 32706 - Available when: 2017-11-15 14:10 - Due to: Unlimited | 8.6k views

49 Answers

0 like 0 dislike 
Hidden content!
#include  *  **** *   *** *
int main (void) {
int check;
int sum;
int flag;
int      * ** *  *    * * ****   * *  * **  * 
  * **     *      *    *** * ** *  * **  *****  * ***  ** **  *     * * * **   *****  *  * ** *****  ***  * ****  *  * **     * * ***  * ******   ** ** ** 
 **  *** **   **** *    * *  ** * **   ** **  *    *      *   **
check=10-(sum%10);

if (flag == check){
** *** **      **    * *  * * *   *    **  ISBN");}
 ***** **   ** * ** *****  *** *
 * *    * ****   *   ** *  *  * 
 ** *  * *   *  * ***   *** * * *** *** *** ** * * *  * * *** * *   ** ISBN");
** *** ***  **** ** ***     *** * *  
 return 0;
}
answered by (-140 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <stdlib.h>

float main()
{
**   * *      * ** *   * ** **  * a,b,c,d,e;
* ****    *** *   ** ****  ***** ** * **     * ***    * **
*      * **  ***   *   *    * *  
  * *** * * * ** ** ****** *  
 ** * ** * *  ** ** ****    
**  **** ***  *  *   *****  ***


**** **   ****  * **** ****  * (a<=30)
 * * ** *** * *   *  **   *** ******  *  ***  *  *** *** * * *** **  * ***     ** 
    *  *   **** *   *** **  ****     * *****  ** *****   (a>30<=50);
    *  ****  **   **    *  **** * ** **  **   * * * *  * ** ***    *** ***  *    ******


    if (a<=50)
*******  ** ****  ***  ***  *   ** ** ****** ***  **** *  * **  *  *** * **  * * 
 *  ***   **** * *  *   * **    * **  *** *  *    **** (a>50);
 * **   *****  ******  *      ** **   ***** *  * *   * * * * **  *** ***   ***   ***   ***

    if (a<=60)
* **  ** * **   ******     ** **  ** *     *** ** * **  ** ** ***  ** ****    **   **
   * **   ***  **    ***  * * **     * *  **   *  *   ** **    (a>60);
   ** ***  ** * **       * *  ** **      ***    *  *** *   *****    **    **  * **     ** * **** 

    * **  ** ****** ****  ** **  0;
}
answered
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
int main(void)
{
    **      **   *****        *** *** * *    *   **** * ** **** 
  * *  *    *  ** ** **  **  **  *   *** ******  *  * ** **   * * *   *   ***** ***  * *  *** * * * *  ***  *** ** ***** **  *  ** *      ** *  ******* **  *  * ****    *  **  ****

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

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

** *   *********   * ** **    *
  * *  * ** *   **   *   *** * 
** ****   *  * *****   *   ** * **    *  *    * ***   ********* **  *** ISBN");
** *  * * *   **   **  * 
* *  * *    **        ** ****
    * * **  *  * * *** *
  * * * *   *  ***   *  **  *    **  ** *****  **   *****   * *  **  *** ISBN");
    }
return 0;

}
answered by (-249 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
int main(void)
{
**** ***** **  * * ** * *  * * ** *  *   *  *  * *** *   *  ***** * 
** ***  * * *  *  ***    ***  *  *  * ** * **  * * * *        * ***** *  **   * **  * * ** *    *  **** * ** ****    * *      *****  ***     * * ** ** ***** *  **  * * * * ***

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

** *****  **      *** *** * ** ** *
    {
***    * ** **  * ***  *  *** *       ** ** *   * *   *  ** **** *   ISBN");
 * ** ** **** *** ** ****   
**  *  * *  **    * **   **** * *
    {
* ***  **    *****  ********   **  **     *     * *   * *   *  *   *   ISBN");
 * *  **  ******   *** ***  *
return 0;

}
answered by (-249 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include ***      *   *  **
int main (){
int a,b,sum,sum1,c=10;
 ***** ***  *     **  *   
  ****  **  **  *  **  ***  * * * * **
do{
***** *  *  *  ****   **  *  **   
*  *     **   ** ****  *** ** *
 *  *     * *  * ** ** **  ***  *
** ** *** *    ***********  *    *   ***   *** **   *   ****
}if(c!==0){
 ***  * ** **  *  * ***** *** * **
sum1=c-sum;
*    * ****  * ** * * 
}
 *  * ** * *  *  *  ***  

return 0;
}
answered by (90 points)
0 0
prog.c: In function 'main':
prog.c:10:12: warning: too many arguments for format [-Wformat-extra-args]
     printf("%d*1+%d*3=",a,b,sum)
            ^~~~~~~~~~~~
prog.c:11:1: error: expected ';' before '}' token
 }if(c!==0){
 ^
prog.c:11:2: error: expected 'while' before 'if'
 }if(c!==0){
  ^~
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
answered by (1.1k points)
0 0
prog.c:1:1: error: expected '=', ',', ';', 'asm' or '__attribute__' at end of input
 test
 ^~~~
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
   *     *  *** *   ***



int main  * **


int *  * *     ****   *  *  * *    *  * *   *     * *    ****** **


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

     * ** + num2*3 + num3*1 + num4*3 + * *  + num6*3 + * ** +  *** +       + * **   + ** * +  ****   

**          **

if   * *  *  
 **   ** *     * * ***  *  *   

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

}

else if (check !=   *  

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




*   0;
}
answered by (-107 points)
0 0
prog.c: In function 'main':
prog.c:11:7: warning: too many arguments for format [-Wformat-extra-args]
 scanf("%13d",&num1,&num2,&num3,&num4,&num5,&num6,&num7,&num8,&num9,&num10,&num11,&num12,&num13);
       ^~~~~~
commented by (4.3k points)
0 like 0 dislike
Hidden content!
*** ** * * * *** ***

int main(void)

{

int ** * ** * * *** * * ** *
* ** *** ** ** *** ** * * * * * *** * * * * * * ** ** * * * * * * ******** *** **** **** * * * * ** * *** *
** ** * ** ** * * * **

check=10-(i%10);
**** ******* ** * *
** ** *** * * ** * * **** * ** ISBN");}

  else
** * *** **** ** ***** * ** * ******* * *** ISBN");}

return 0;

}
[] - answered by (-32 points)
ID: 33455 - Available when: Unlimited - Due to: Unlimited
edited by
0 1
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>

int main()
{
   long whole=0;
     ** *  * **  ****   **  ** isbn;
***           ** **  ** *  **     * * * * ***  * *  &isbn);
  * ****   **  * ** *  n1,n2,n3,n4,n5,n6,n7,n8,n9,n10,n11,n12,n13;

 * * *   *   * * *   **   *   **  *** * * 
*****  **  * **  ****     *   ***  ******* * **   *  * *
 *  *  ***     ****** **  **   * ** *** *  ***   * 
****   *    * **    * ****   *****  *   ** **
*      *  *** *    *     ** ****  **   ***   
** * *** * *   * *   *     * *  * **      ** 
***** *  *  ** *  ****  ** *** * * *** ** 
*   *****  * *   *    * ****     ** * *   *
** * ***  **  ***  *** * *  *****  **  *  
   ***** *  *** ** **  **  **   * ****
*       **** *** **   *** * *
 *   **  ** *       ******  *** *
*****  ******  **  *    * *  *  * * ** 
whole = ** *  **   * *   ** **  *   *     **  ** *   ** * **  * ** *

printf("%ld", whole);
if (10-(whole%10)==n13)
*     *  ** * **  *  ** * *       ****** ** ISBN");
    }
 * * *  * ** **  *  *     * * * 
  * * *  * **       *  **    *   ** *  **   ** *  ISBN");
  **  *****    *  * ***  * ** *  ** **

   * *** ****   *  * *** **  0;
}
answered by (323 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>

int main()
{
   long whole=0;
   *  ** *   **    ****  *   isbn;
 *** **   ** ***** *    **  *      **  *      *   &isbn);
*  * ***     *     ***** **** n1,n2,n3,n4,n5,n6,n7,n8,n9,n10,n11,n12,n13;

 * ** ****  * *****   *    *** ***  *  ***** *
******  **           * * ************** * **  *      
* * *  *    * ***      ****** ***     * * ** *
   *** *  * ** * ******* **   **** **** ** *****   
* *** *    *** * **** *  **  **  ** * ***** 
 * * *  ***  *   * *****  *    *** ** *    *   *
*  **  ** *  ***   ***  * * *  *   **   *** *    
 * *      * * * * * **   * *   *      **
    ****    **    * * * *   *  **** * 
  * **      ** ** **  ***  **  **   
****      ** *  *  * * * ***** *  *   
   **  *   * *   ****** **   * ****  **
 *     * *    **  *   * ***       
whole = * *  * ****   * ***   **  *** *  *  *  ***   **   * * *  *  *     
if (10-(whole%10)==n13)
   *  **  **** ***  * *** ** * * *** ****  ISBN");
    }
** ** *   * * *   ****** * 
* ** **** *  * ***  ***  ** ***  ***     ****   * ISBN");
*** ****    **   * ** ***    ***

***  **** * *** * * * *  *** 0;
}
answered by (323 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
Page:
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.69.214.39
©2016-2025

Related questions

0 like 0 dislike
26 answers
Midterm Question 2 - Makeup
[Exam] asked Dec 9, 2017 in Midterm by thopd (12.1k points)
ID: 36751 - Available when: 2017-11-15 14:10 - Due to: Unlimited | 5.7k views
2 like 0 dislike
77 answers
10-19 Exercise 1: International Standard Book Number (ISBN)
[Exercise] Coding (C) - asked Oct 19, 2017 in Chapter 5: Selection Statements by thopd (12.1k points)
ID: 27667 - Available when: Unlimited - Due to: Unlimited | 14k views
12,783 questions
183,442 answers
172,219 comments
4,824 users