2 like 0 dislike
16.9k 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 | 16.9k 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:172.70.50.51
©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
| 6.9k 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
| 10.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users