1 like 1 dislike
8.1k 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
| 8.1k 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:108.162.241.185
©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
| 5.2k 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
| 13.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users