2 like 0 dislike
19.2k 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

 

[Exercise] Coding (C) - asked in Chapter 5: Selection Statements by (12.1k points)
ID: 27667 - Available when: Unlimited - Due to: Unlimited

edited by | 19.2k views

77 Answers

0 like 0 dislike
Hidden content!
#include <stdio.h>
#include <stdlib.h>

int main()
{
** * *** * **** * *** *** * *** * * ** ** ******* * * ** * ** ** * ***** * * * *** * * * * *
**** * ** * ** *
*** ** * **** **** * ****** * * ***** **** ** * ******* * ** ** ****** * * ** * ** ** * ** * * * ******* * ** ****** * * * ** *** ** **** * ** ** * ******* ** * * ** ** * *** * *** ** ** *
*** ** * *** * * ***
** **** * * * ** * * * = ** * ** ** * ** ** * * ***** **** * * ***** *** *** * * *** * * ** * ******
**** ** ** ** ** *
* * ********* * * = 10 - (a%10);
    
* * * * ** **** * * ** ( b == number13 )
* * * * ** * ** * * * ** * ** ** * * * ** ** * *** * ISBN");
    
*** ** * * ** ** ** ** * *
*** * * *** * * * **** * ** * ***** * * * * ** * ** * * ISBN");
* ** ****** * **** * *
* * *** * ****** **
** *** * * ** * *** * 0;
}
answered by (-233 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
int main()
{
* ****** *** ** * *** ** ** * * ** *
****** * *** * * * ** * * ***** ** * * * ** * * * *** * *** * ** * * ** * ***** *** ** *** ** * * ******** *** ******* *
* * * * **** * *** * * ** *** * * ** * *
*** * *** * * **** *** **** ** *
** * * **** * * * * * *** printf("Valid ISBN");
* * ** * * **** * * * printf("Invalid ISBN");
***** *** ** * ***** ** * * 0;
}
answered by (-32 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()
{
*** *** * * * * * *** a,b,c,d,e,f,g,h,i,j,k,l,m;
* *** *** **** * ** * * * * ** * * * * ** *** * * ** * ** ** * *** ** ** **** * *** ** * *** ** * ** **** * * ** **** * * ****
* * * * * *** * * ** * * ** ** ** * * **
*** * * ** * *
* ** ** * ***** * ** **** ** **** * **** * ** ** * ISBN");
*** *** * * *** *****
** * * ** ** * ** * *
    {
* * * * * ** **** ** * *** * * * ** *** * ** * ISBN");
* * * * ***** * * * * **
}
answered by (-254 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>
void main()
{
    char isbn[12];
    int a=0,b=0,c,d,e,i,g,h;
*** ** *** ** * * ** * * * * *** * * * *
**** ***** ** *** * * * *
* * **** *** ** *** ****** * * * *** * ***** ****** * ** * * * * ** *** * * **** ***
* * **** ** * ** **** ***** *
** ** * ** **** * ****** * * * ******* **** *** **** *
* * * * * * *** * ***
* * * ** * * * * * *** *** **** * *
** ** ** * * ** ** * *****
** ** * ******* * * ** *** ** ** **
** * *** ** *** * *** *
*** * * * * * * ** ** ** * *** * * * * **
* ** * * ** ***** * * * *****
*** ** * * *** * ***** * * * *** ** * * ** ** *
** *** * * ** * **** **
** *** *** * * * *** ** * ** * *** ** *** ***** ** ISBN");
    else
* ******** ** **** *** *** ** * *** *** ***** *** * *** *** *** ISBN");
}
answered by (-32 points)
edited by
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
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()
{
* * * *** **** * ** * * ** a,b,c,d,e,f,g,h,i,j,k,l,m;
* * ** * * ** **** ****** **** ** * ** **** * * ** ***** * *** *** ** * ****** ** **** ***** * * * * ***** *** * * * * *
** * ***** ** ** * *** * ** ** * ** * ****** * * *** * **
**** * **** *
** * * * *** * *** *** * ** *** * * * * * **** ISBN");
* * *** * ****** *****
*** * *** ** * * * ***
    {
** * *** ** *** * * *** * * ** ** * * * **** * ISBN");
**** *** ** * ** * *
}
answered by (-214 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 (-16 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()
{
** *** **** * * ** *** * a,b,c,d,e,f,g,h,i,j,k,l;
*** * ** ** * ** ******* m;
**** ** ** * * ** * n;
** *** * *** * ** * ** * ** * ** **** ** * ** * * * * ** * * ** * * ** *** ** *** ******** * * * **** ** * *
** * * *** *** * ** * ** * * ** * * ******
** * *** * ** ***
* ******** * * ** * * *
* ** * * * * ** ** * **
***** ** * *** *** ****** **** ** * * *** **** * ISBN");
    }
** * ******** * ** *
    {
* **** ** * * ** ** * * ** *** * * * * * * ** **** * * ISBN");
* ** *** **** * **
}
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>
#include <stdlib.h>

int main()
{
**** ****** * * ** **** ** a,b,c,d,e,f,g,h,i,j,k,l,m,n,o;
* * * ** ** **** * * **** **** *** ** ***** ** ***** * ** ** ** * * * *** *** ** * * *** * * * ** ** * * * * ***** *
* *** ** * ***** ****** * ** * * ***
* ** ** ** ** ****** ***
***** ** * ** ** *
* * * ** ** * * ** * * * ** *** * * *** * **** ** ** *** * ISBN");
* * * ******** * ***
* * * *** * *** ****** * *** * * * * **** * * * ** ISBN");
* *** ** *** *** ** *** *** 0;
}
answered by (-498 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()
{
**** ** * * ** n1,n2,n3,n4,n5,n6,n7,n8,n9,n10,n11,n12,n13, sum;

*** * * *** * * *** **** ***** ** * * * * * * * * ** *** * ** **** **** * ** * *** * ** ** **** ********* * ** **** * * ** ** * * *

* ** * * *** ** *** * * * ** * **** **** * ** *** * * *** ** **

* * * * **** **** **** * * **
** * * *** *** * ** * ** *** * *** *** *** 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()

{
    int * **** ** ** ** *** *
***** **** ** **** ** ** *** * ** * * ** * * ***** ****** * * **** ** *** ** **** **** ** * * * * **** ** * ** **** * * *** ** ******

** ****** * * * * *** * ** * * * * *** * * * *** ** ** ***
* * *** ** ** * **** ** *

* ** * ** ** * *** * **
**** * * * * ** * ** *** *** ***** ISBN");}
* ** **** **** * ** *** * **
*** ********* ** * * ** * ** * ** ISBN");}

* * * ** * *** * ** * ** ** 0;
}
answered by (-249 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:104.23.243.109
©2016-2026

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
| 7.7k views
1 like 1 dislike
49 answers
[Exam] asked Nov 15, 2017 in Midterm by thopd (12.1k points)
ID: 32706 - Available when: 2017-11-15 14:10 - Due to: Unlimited
| 12.4k views
12,783 questions
183,442 answers
172,219 comments
4,824 users