1 like 1 dislike
6.1k 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
| 6.1k views

49 Answers

0 like 0 dislike
Hidden content!
* ** ** * ** *

int main(){

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

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

* *** *** * *** *** * * printf("Valid ISBN");

****** * * * * ** ** * printf("Invalid ISBN");


return 0;
}
answered by (-301 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)
edited by
0 0
Case 0: Wrong output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
0 0
Case 0: Wrong output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct 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*1 + b*3 + c*1 + d*3 + e*1 + f*3 + g*1 + h*3 + i*1 + j*3 + k*1 + l*3);
* **** ** * * * = 10 - (sum%10);
** *** * ** * *** *** ** ** * * *
*** * ** ** ** *** ** * * ** * * * * * ** ** ISBN");
* *** * * * ** ** **** *
******** * *** ** *** **** ** ** * ** * * * ISBN");
** ******** * ** ** ** 0;
}
answered
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 a,b,c,d,e,f,
** * ***** ** * ** *** ** ** * *** **** ** *
* * ** ** * ** *** ** ** * ** * ** * ** * ** *
* ** * * **** *** * **** * * *** * * *** * ** ** * ** * * ** * ** ** * ** * **** *** * * * **** * * * **
** * * ** * * *** *** * * * * * * ** *** ** *
* * ** * ***** ** ** * * ** ** * ******
** * ** ** ***** **
* ** * * ******* ** * * *****
*** * ** * * ** ** * * * * * * *** * *** * *** * ** ISBN");
    }
* * *** * * * ** ** * *** **
* ** **** ***** * ***** * ** * * *** * ***** * * ISBN");
    }
* ******* * ** * * * 0;
}
answered by (54 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 **** * *

int main()
{
** ** * * ** ** ** * * ** *** * ** * * *
***** ** *** * ** * * ** * ** * * ******* ** * ** * * * * * * ** ** ** ** * * * ******* ** *** ********* * * ****** ** * * * * ****
*** ** **** * * ***** = 10 - ((a + c + e + g + i + k) + (b + d + f + h + j + l)*3)%10;
*** **** * * ** ** == m)
* * **** * * ******* *** *** *** * * * * **** * ** ******* ** * ******* ISBN");
* * * ** *** **** * ****
* ***** ***** * **** * * ** ** * * **** * * * ** * ** ISBN");

** ***** * * ** * * * 0;
}
answered by (-255 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(){
***** ** ** * * * * * * i=0,sum=0;
* * * * * * * * isbn[12],check;
** ** ** **** * ****** * *********
***** * * *** *** * * *** * ** *** **** * ** * **** **** ********* *
* * *** ** * *
* **** ****** * ** * ** * * * ** ** *** * * *** *

*** * ** **** ***** * **
*** * ** * ***** *** ** *** *** * *
******* * *** ** * ** * * ** * ** * ****
    }

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

* * *** * ** * * ***** *** ** printf("Valid ISBN");
** *** * * * * * *** ** * printf("Invalid ISBN");

* * * ** ** * * ******* 0;
}
answered by (-116 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()

{
* * ******** * * * ** * ** *** ** * ****
*** ** ** ** * *** * * * * ** ** * * * ** ** ** ** * * **** ** *** ** ** *** * * ** * ** * ** **** * ** * ** * * * *** ***

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

**** * **** * ** *** (check==last)
    {
* * ** ** ** ** **** *** * * * * ** ** ** * 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
0 like 0 dislike
Hidden content!
#include <stdio.h>
int main()
{
    int ** * ** * ***** ** * * *** ***
* * * * * ********* * ** ** *** * ** ***** * * **** * * * *** **** * * **** * * * ** * ** * * * * ** ** ****** * ** * * * ** * * * **** *
*** * ** ** * *** ** ***** * ** *** **** ** ** ** *
* *** * * *** * * * * * * **** * **

* * ***** * ***** * * * ** * ** * ** *
* ** *** * *** * * *** *** * ** *** * * * ** * * ***** ISBN");
** * * * *** ** ** printf("Invalid ISBN");

** * * * ** ***** 0;
}
answered by (-196 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;
* * * **** ** ********* *** ***** * * * * **** * *** * * ** ** * ******** * * * * * * * * **** ** ** *** * * ** * *** * *** *** * * * *
* * * **** ** *** ** *** * ** * ** **
*** ** * *** *** **** * ** * *
** **** * ** ** * **
*** *** * ** ** * * ******* *** *** *** * * ***** 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
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.70.100.66
©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
| 3.9k 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
| 10.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users