0 like 0 dislike
2.3k 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
| 2.3k 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:172.69.6.45
©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
| 3.6k 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
| 5.9k 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
| 1.8k views
12,783 questions
183,443 answers
172,219 comments
4,824 users