1 like 1 dislike
11.8k 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
| 11.8k 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:104.23.197.64
©2016-2026

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
| 7.4k 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
| 18.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users