1 like 1 dislike
8.1k 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: 32706 - Available when: 2017-11-15 14:10 - Due to: Unlimited
| 8.1k 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:162.158.158.172
©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
| 5.2k 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
| 13.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users