1 like 1 dislike
12.4k 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
| 12.4k 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:104.23.197.95
©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
| 7.7k 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
| 19.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users