Midterm Question 2

1 like 1 dislike
6.4k 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 | 6.4k 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:172.70.100.7
©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 | 4.2k 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 | 10.8k views
12,783 questions
183,442 answers
172,219 comments
4,824 users