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