1 like 1 dislike
8.6k 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
| 8.6k 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:108.162.241.33
©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
| 5.7k 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
| 14k views
12,783 questions
183,442 answers
172,219 comments
4,824 users