0 like 0 dislike
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
| 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:172.70.130.194
©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
| 1.5k 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
| 2.4k 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
| 731 views
12,783 questions
183,443 answers
172,219 comments
4,824 users