1 like 1 dislike
7.2k 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
| 7.2k 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:172.70.126.38
©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
| 4.7k 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
| 12k views
12,783 questions
183,442 answers
172,219 comments
4,824 users