1 like 1 dislike
6.5k 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
| 6.5k 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:172.69.17.64
©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
| 4.2k 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
| 10.9k views
12,783 questions
183,442 answers
172,219 comments
4,824 users