1 like 1 dislike
10.4k 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
| 10.4k 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:108.162.216.241
©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
| 6.8k 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
| 16.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users