1 like 1 dislike
13.7k 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
| 13.7k 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:104.23.243.109
©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
| 8.4k 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
| 21k views
12,783 questions
183,442 answers
172,219 comments
4,824 users