1 like 1 dislike
10.1k 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
| 10.1k 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:108.162.241.184
©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
| 6.6k 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
| 16.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users