1 like 1 dislike
11.8k 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
| 11.8k 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:162.159.115.9
©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
| 7.4k 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
| 18.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users