0 like 0 dislike
3.5k 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
| 3.5k 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:172.69.58.3
©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
| 5.4k 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
| 9k 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
| 2.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users