1 like 1 dislike
6.8k 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
| 6.8k 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:172.70.131.173
©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
| 4.5k 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
| 11.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users