1 like 1 dislike
7.6k 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: 32706 - Available when: 2017-11-15 14:10 - Due to: Unlimited
| 7.6k views

49 Answers

0 like 0 dislike
Hidden content!
#include<stdio.h>

int main() {
* * * ******* * * * *** a[13],i,sum=0;
** * *** *** ** ** * * * * * ** {
* * * * *** * **** * * ** * * ** **** * *** * * ** ***
* ** *** ** * ** ** ** *** ** ***** **** *** ** * * *
*** ** **** ** **** * * **
* * * **** * * ** ***** * * * ** *** {
* ** * *** * * * ** ***** ****** * ** **** * * * **
**** ** * ** ** * * * * * * * * ** * * * ** * *
    }
*** ** * ** ***** * * *** * ** **** {
*** **** ****** ** ** * * **** * **** *** ** * *** ** *
*** * * ** ** *** * * ***** ** *** **
    }
* * * **** ** ** * * ** * ** * {
** * ***** * * ** ***** * *** ** * ** ** * *** ***** * ISBN");
*** * * *** *****
**** **** * * ** *** {
* * * * * *** * ***** * ** * ** * * ******* ISBN");
    }
}
answered by (-120 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>
int main()
{
   int ** *** * **** * ** **

***** * ***** *** **** * *** %1d %1d %1d %1d %1d %1d %1d %1d %1d %1d %1d * ** * * * ** * * * *** **** *** * ** ***** * ** *** *** *** * * * * ;

* ** ***** ** * *** * ** ****** ** *** ** ** ** **** * *** * * * ***

* ** ** * ** ** * ** ** *
* ** * * ** *** * * *** * **** ISBN");}
* *** * ***** *** * * * * *
* ******* * **** * * * *** ** *** * * **** *** * ***** ISBN");
**** ** ** **** * *
** ******** * ****** * ** * 0;
}
answered by (-167 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>
int main()
{
*** ** *** ********* **** * * *** * ** *

* *** * * *** * * ** *** %1d %1d %1d %1d %1d %1d %1d %1d %1d %1d %1d *** * * ********** * * ****** * * * *** * ** ** * * * ** * * ** ** **** ;

** *** **** **** *** ***** * ** ** **** *** ***** * * * * *

* * * * ****** **** **** **
* ** * * **** *** **** * * * ** *** ISBN\n");}
*** * * ** ***** *** * * * * *
* * * ***** * * * * *** * *** *** * * ** * * ISBN\n");
** * * * ** * ** ** *
*** ** * * *** * 0;

}
answered by (-167 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!
#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;
* * ** * * ** * * *** **** ** ** *** * * * **** ** * * ** * ** ** * ** * * * **** ** * *** *** ** ** * * *** ** * ****

** * *** ***** * ** * ** ** **** ****
**** * *** * * * ** **** ****

*** *** * * ** * **
** * *** *** ***** * **
* * * ****** * ***** * **** *** * * ** * ****** **** * 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
0 like 0 dislike
Hidden content!
** **** ****** * *
int main()
{
** ******* ** * * * **** a,b,c,d,e,f,g,h,i,j,k,l,m,sum;
**** ** ** ** * *** ***** ***** ** * * ** * *** * ******* ** ** ******* *** ** * * ** * * * * * * ** * * ** * ** * * * **** ** * * ***
****** *** **** * * * ** ** (a*1 + b*3 + c*1 + d*3 + e*1 + f*3 + g*1 + h*3 + i*1 + j*3 + k*1 + l*3);
* ** * ** *** ** 978960931961
* * *** * *** **** ** ** **
* * * * * ** ******
** * * * ********* ****
* ** ** *** ** * ** ** **** * ** * ** ** * ** * ***** ISBN");
*** * ** * ****** * ** **
* * ***** * * *
* * * * * ** ** ** **
* * ** ** ** * ** **** *** *** ** * * ** ** * **** ** ISBN");
** ** * * * * ** * ** *

//9781482214505
//9780132936493
}
answered by (-329 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>
int main (void)
{
** ****** * ** ****** * tab[13],s,i,m;
* * ***** * *** * ****** * (i=0;i<=12;i++)
** * * * * * * *** **** *
* ****** **** * *** ** **** * * * * * *** ** * *** **** ** *
*** * **** *** ** * *
* * ** * *** ** * ** ******** ** *** ** **** * * * ** ** * ** *** * **** * * ** ** * **
* * ** * * ** * * *
* ** **** *** * * * (m==tab[12])
    {
* ** * * ** * ***** * ******** *** *** * * * ** * ***** ISBN");
* * *** * **
* * *** * * * ** * ** **
* *** **** * ** ****** ******** * *** * ** ** ** *** * ISBN");}
** ** ****** * * * * ** 0;
}
answered by (-168 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>
int main (void)
{
**** ***** * ***** * ** **** *** * ****
* * * ** ** * ** ** * * **** * * * * * * *** * * * * *** * ** ** ** * * * ** ** * ** * **** * * *** * * ** * *** ** * * * **** *** * **** ** **
* *** * ** * **** *** ***** *** * * **** * **
* * **** * ** *** (10-(b%10)==a13){
* **** ***** * *** * ** * *** ***** * ** * * ** ("Valid ISBN");
** ** * * * ** * ****
* ** * * ** * {
* ** *** * * * * ** ** * ** **** ** ("Invalid ISBN");
*** *** **** * *** ***
}
answered by (-204 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()
{
    int * ** ** ** ** ***** ***** ** ***

* *** **** ** ***** * * * * * ** *** ** *** ** * * ** ** * ** ** ** * * * ** * ******* * * ** * * ******* * *** ***** ** ** * * * ** *** **

* ** ** * * * * ** * * ** = * *** * *** **** ** ** ** * * * ** * *

* *** ** ** * * *** ** * * *
** ** * * *** * **** ****** ** ** * ** ***** ** *** * * * * *** * * ISBN");
** * * ***** * **
* * ***** * ******* * ** * **** ** *** * ** * ******* ****** *** * ** ISBN");

* ** *** ******* *** * ** * 0;
}
answered by (-168 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!
**** * ** *** **

int main()
{
int ** * * * * * *
* * * * * * %1d %1d %1d %1d %1d %1d %1d %1d %1d %1d %1d ** * ** * * * * ** * * ****** * * ** ** * * * ** * *** * * * ** * * *** * *** *
**** **** ****** *
* ** *
** * *
***** **** * ** *
else
* ** ** ** * * * ***
*** 0;
}
answered by (-66 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!
** ** **
int * * ** * * * * * ** * *
int main()
{
**** * * * * * * ** * * ***** ***** * *** * * * ** * * * *** *** * ****** *** * ** ** **** ***** * * ** * ***
* * ** *** * * * * * **
c=10-(b%10);
if(c==a13)
{
** * * **** * * *** ** * ** * * ISBN");
}else
{
* ** ISBN");
}

}
answered by (-336 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:172.70.130.20
©2016-2025

Related questions

0 like 0 dislike
26 answers
[Exam] asked Dec 9, 2017 in Midterm by thopd (12.1k points)
ID: 36751 - Available when: 2017-11-15 14:10 - Due to: Unlimited
| 4.9k 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
| 12.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users