0 like 0 dislike
5.3k 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: 36751 - Available when: 2017-11-15 14:10 - Due to: Unlimited
| 5.3k views

26 Answers

0 like 0 dislike
Hidden content!
#include<stdio.h>
int main(void)
{
*** ** ** ** *** * * * a,b,c,d,e,f,g,h,i,j,k,l,m;
** *** * * * * * **** * * * ** ** * **** ** * ** * *** *** * ** * **** *** * * * **** * *** * * **** ** * * * *** *

* ** ** * * * * * *** ** check,sum;
** * * * * * **** ** * *** * ** * *
****** **** * ** ** ** * * * **
    

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

** * ** ** ** * ** if(check != m)
* * * *** ** **
* **** ** * * ** *** * ** ** * * ****** * *** ISBN");
* * * *** * ** * *** * *
* *** * * ** * ** ***
* * ** * *** *** *** *
*** *** * ** * ** ***** * * * ** *** ISBN");
**** ** * * **
}
answered by (-249 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Wrong output
0 like 0 dislike
Hidden content!
#include<stdio.h>
int main(void)
{
*** * * * *** * ** * * a,b,c,d,e,f,g,h,i,j,k,l,m;
* ** * * ** **** ** * * * ** * * ** **** * ** *** * *** *** **** ** *** *** ** * * ** * * ** * ** * *** * ** * * ** *** *

**** **** ** * ** **** * check,sum;
* * * * ****** * ** ****** * ** * ** * ***
** * * * **** * ****** * *** *
    


** * ** ** * ** * ** * != m)
* * * *** * ***
*** *** * ** **** ** * * * ** * ***** ** *** **** * ***** ISBN");
* * * * * **
**** **** *** * * **** **
* * * * ** ** ****
** *** ** * *** *** * ** ** *** * ** * * ISBN");
* ** *** ** * * ** * *** *
}
answered by (-249 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Wrong output
0 like 0 dislike
Hidden content!
** * * * * * ****** *
** ** **** *

int main()
{
* * ** * * ** * * * * ** ****** a noob.\nI forgot * *** ***
*** * **** *** * **** * 0;
}
answered by (-108 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!
* * ***** *** * *
int main()
{
int ** ***** *** ****** * ** **
**** * ** ** ***** ** * ** ***** ** * * ** ** **** * * * ** ** * * * * ** **** * *** * ** **** ** * * **** *** ** *
* **** * *** ** *
check=10-sum%10;
* * * ** * * *** ** ISBN");
else * * * ** *** ISBN");
return 0;
}
answered by (-32 points)
0 0
Case 0: Wrong output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
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()
{
* *** ***** ** ** *** a[13],i,j;
* ************* * * ** * *** **** * *
* *** * * ** *** ****
* *** ** ** *** * **** **** ** ** **** ** ** ** * * * * **** *****
    }
*** ** **** ** * * *** *** *** *** * * * **** * * ** ** * * ****
* ** *** * ** * ** * * ** *
    {
** *** * * * ** * * **** ***** * ** ** * * ** * * ISBN");
*** * ** *** ** * * * ** *
* *** * ******* * *
** * * ** * * * ******
* ** * *** ** * ** ***** **** ** ** ** * * * *** * * ISBN");
** *** * ** * *
}
answered by (-255 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()
{
** **** *** ** *** ** * * ** ** a,b,c,d,e,f,g,h,i,j,k,l,m,sum=0,check=0;
** ** * * **** ** * ***** * ** * ** **** * *** * ** * * * ** *** * **** * * ** **** * *** * ** * ** * * * ** *** ****** * * * **
* * * ** * * * ** * ** * ** ** ***** *
* *** * * * * *** * * *** * **

**** ** * * * * **** ** (check==m)
** *** * * **** * * * * ** ** ** ********** ** *** * * * * ** 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
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.70.80.171
©2016-2025

Related questions

1 like 1 dislike
49 answers
[Exam] asked Nov 15, 2017 in Midterm by thopd (12.1k points)
ID: 32706 - 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
| 13.6k views
0 like 0 dislike
15 answers
[Exam] asked Dec 9, 2017 in Midterm by thopd (12.1k points)
ID: 36755 - Available when: 2017-11-15 14:10 - Due to: Unlimited
| 3.9k views
12,783 questions
183,442 answers
172,219 comments
4,824 users