1 like 1 dislike
10.3k 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
| 10.3k 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:172.70.131.201
©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
| 6.7k 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
| 16.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users