0 like 0 dislike
1.1k 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
| 1.1k 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:172.70.126.201
©2016-2024

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
| 1.6k 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
| 2.7k 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
| 738 views
12,783 questions
183,443 answers
172,219 comments
4,824 users