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:172.71.254.104
©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