1 like 1 dislike
6k 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
| 6k 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:172.71.254.192
©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
| 3.9k 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
| 10.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users