1 like 1 dislike
13.4k 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
| 13.4k 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: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
| 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
| 20.8k views
12,783 questions
183,442 answers
172,219 comments
4,824 users