1 like 1 dislike
13.3k 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
| 13.3k 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:162.159.115.10
©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
| 8.3k 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
| 20.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users