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:172.70.130.179
©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