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:104.23.243.108
©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