1 like 1 dislike
10.3k 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
| 10.3k 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:108.162.216.241
©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
| 6.7k 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
| 16.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users