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:172.69.6.211
©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