1 like 1 dislike
6.4k 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
| 6.4k 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:172.69.17.199
©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
| 4.2k 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
| 10.8k views
12,783 questions
183,442 answers
172,219 comments
4,824 users