1 like 1 dislike
5.4k 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
| 5.4k 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:172.69.6.25
©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
| 3.5k 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
| 9k views
12,783 questions
183,442 answers
172,219 comments
4,824 users