1 like 1 dislike
5.4k 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
| 5.4k 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:172.69.59.92
©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
| 3.5k 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
| 9k views
12,783 questions
183,442 answers
172,219 comments
4,824 users