1 like 1 dislike
12.5k 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
| 12.5k 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:104.23.197.65
©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
| 7.7k 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
| 19.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users