1 like 1 dislike
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
| 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:172.70.80.53
©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
| 5.1k 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
| 13.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users