1 like 1 dislike
5.4k 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
| 5.4k 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:172.69.6.25
©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
| 3.5k 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
| 9k views
12,783 questions
183,442 answers
172,219 comments
4,824 users