1 like 1 dislike
8.7k 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
| 8.7k 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:172.70.194.138
©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
| 5.7k 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
| 14.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users