1 like 1 dislike
6k 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
| 6k 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:172.69.59.25
©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
| 3.9k 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
| 10.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users