1 like 1 dislike
9.6k 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
| 9.6k 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:172.69.214.205
©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
| 6.2k 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
| 15.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users