1 like 1 dislike
13.4k 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
| 13.4k 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:162.159.115.9
©2016-2026

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
| 8.3k 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
| 20.8k views
12,783 questions
183,442 answers
172,219 comments
4,824 users