1 like 1 dislike
13.3k 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
| 13.3k views

49 Answers

0 like 0 dislike
Hidden content!
#include<stdio.h>

int main() {
* * ** * ** * * ** ** **** a[13],i,sum=0;
* ** **** ** * * ** * ** ** *** {
* * * *** * ** **** ** ** ** *** **** * * * *
** * ** * * * * * * * * * * * ****** * *
** *** *** * *
*** ** *** * * * ******* * {
* * ** * **** * * * * ** * * ** * **** * * * ** * *
** ****** * ** ***** * ** *** * * * *** ** * * *
    }
* * * * * **** * * **** * * {
*** ** ** *** * * * **** *** * **** * * **
** * * ** * ** * * ** * ** * ** * * * ** *** *
    }
*** ** *** ** * * ** *** * ** * *** {
* ***** ***** ** * * ** ** *** * ********** * * * ISBN");
* * * ***** **** ** **
* * ** ****** * * {
* ** * * ** * ******* * ** ****** ** * * *** * * * * ISBN");
    }
}
answered by (-120 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
int main()
{
   int ** ** * * * *** ** * ****

*** * ** ** *** * *** * * * %1d %1d %1d %1d %1d %1d %1d %1d %1d %1d %1d * * * ** * * * * *** ** ** ***** ** * *** * ** **** * ** * * * * * * * *** * * * * *** ;

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

**** * * ** ***
*** *** * **** ** * * *** ISBN");}
* * ** * * *** * ** **
* * * **** * **** ** * *** * ** ****** * * * *** ****** ISBN");
* * ** ** * * * ****** *
* * *** *** * * * 0;
}
answered by (-167 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
int main()
{
*** ** ** *** *** * **** ** *** ***** * * **** *

*** * *** ** **** ** * %1d %1d %1d %1d %1d %1d %1d %1d %1d %1d %1d * * * *** **** ** ** * * * ** * *** ** * * * *** *** * *** * * * * * * * ***** **** * * * ** ** ;

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

** ** **** ***** *** * * *** *
** ** **** * ** * * ** * ** ISBN\n");}
* * ** * ******* ** **
* * * ** * ******* * ** * ** * *** ******** ** * * ISBN\n");
** ** * ** ***** * *
****** * *** * * ** * 0;

}
answered by (-167 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
0 like 0 dislike
Hidden content!
#include <stdio.h>
#include <stdlib.h>

int main()
{
**** ***** * * * * a,b,c,d,e,f,g,h,i,j,k,l,m,sum=0,check=0;
** **** * * ** * ** ** *** * ***** * * * ** * * ** * * * * * * ** * * ** * ** * * * ** *** **** *** ***** ****** ** * * * ** * * ***

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

* * * * ******* * ** ****
* ********* * * ** **** *
** * * * ** * ** * * * ** ** * * * * *** ** ISBN");
** ** * ** * ** *****

**** * * ** ** ** ****
    {
* * ** **** * ** * * * * **** *** * * * * ISBN");
* * * ** *** *** * * *

* * * ** * ****** 0;
}
answered by (-127 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
0 like 0 dislike
Hidden content!
* * * * *** *
int main()
{
* * * ** * ** * * * * *** ** a,b,c,d,e,f,g,h,i,j,k,l,m,sum;
***** *** *** *** * ** * ** * **** * * * ** * ** * * ** *** * ** * * ********* ** * ** * * * * *** ** * * ** ** * * *
* * * ** * **** * ** ** * (a*1 + b*3 + c*1 + d*3 + e*1 + f*3 + g*1 + h*3 + i*1 + j*3 + k*1 + l*3);
* * * *** * * * 978960931961
* *** * * *** * * ** ***** *
** * ** **** * * ** * *** *
***** ***** * *** * *
* * ** ** **** *** * *** ****** ** * ****** ** ** ISBN");
* * * * * * ** ** *
*** * *** ***** *
** **** * * * * * *
* *** *********** ** ** ** * **** * ** ********* ** ** * * ** ISBN");
* * * * ** ** **** * ** *

//9781482214505
//9780132936493
}
answered by (-329 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
0 like 0 dislike
Hidden content!
#include<stdio.h>
int main (void)
{
** * ** ** ** ** * * **** * tab[13],s,i,m;
*** * ***** * ** * ** * ** (i=0;i<=12;i++)
***** * * ***** *** **
* * *** * * ***** * *** * ** ** *** * *** * * * ***** **** * **
******* * *** * *** *
* ** ****** *** * * * * *** * **** * ** **** *** ******* ***** *** * ** * * **** * ********
** * * **** ****** ** * *
* *** * * * * * **** (m==tab[12])
    {
** * * ***** * * ***** ** ** * * ** * ** *** **** ISBN");
* ** * ** **
* ** * * * ** *
**** ** *** * * ** * * * *** ** * * **** * * ** * ISBN");}
* * * * * * * 0;
}
answered by (-168 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
0 like 0 dislike
Hidden content!
#include<stdio.h>
int main (void)
{
**** * ****** * * * ** * * * * * * ** * *
* ** * **** ** ** * **** * * * ** * ** ** * * ** * ** * * **** ** * ** * * * *** **** *** * ** * * * ** * *** ** ** ** * ** ****
* * * ** ** ******* * ** ** ***** * ** ** **
*** * * * ***** *** (10-(b%10)==a13){
****** * ** * *** ** * * ** * * * * ** ** *** * * ** ("Valid ISBN");
* * ***** **** ** ****
* *** ** *** ** ** ** {
* *** * * ** * * ** ** * * ** ** * *** ** *** * * * ("Invalid ISBN");
** **** ** *** *
}
answered by (-204 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
#include <stdlib.h>

int main()
{
    int ** ** *** *** *** *

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

** ** * * * * * = **** *** ** * * ** * ** * *

*** *** **** * * *** * * ** *
* ** ** ** * ** * * * **** * ** *** * ** ** * * * ** * **** **** ISBN");
* ** *** ** * ** * * ** *
*** *** * * *** ** * **** *** ** * ** ** * **** * *** ** * *** *** ****** ISBN");

* *** ******* * *** ** 0;
}
answered by (-168 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
0 like 0 dislike
Hidden content!
** *** * ** * * * *

int main()
{
int *** * ** * *
** * * * ** %1d %1d %1d %1d %1d %1d %1d %1d %1d %1d %1d ** * **** *** ** ** * *** * * ** ****** ** ******* * **** * * * ** * * * * * ** * **
* ******* * *
** ****
*** **
** ***** ** * ** **
else
*** ** ***** ** * *
* ** 0;
}
answered by (-66 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
0 like 0 dislike
Hidden content!
* * * * * *
int * * * ** *** ** * * * * *
int main()
{
** * * * ** * * * *** ***** **** *** * * *** **** ** * * *** ** * ** ** * *** ** * * ** * ** * * *
**** ** **** **** * * *** ** *
c=10-(b%10);
if(c==a13)
{
* * ** ** * * * ** ** ** * **** ISBN");
}else
{
* * *** * ISBN");
}

}
answered by (-336 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:104.23.243.108
©2016-2026

Related questions

0 like 0 dislike
26 answers
[Exam] asked Dec 9, 2017 in Midterm by thopd (12.1k points)
ID: 36751 - Available when: 2017-11-15 14:10 - Due to: Unlimited
| 8.3k views
2 like 0 dislike
77 answers
[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
| 20.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users