1 like 1 dislike
6.3k 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
| 6.3k 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:172.71.254.45
©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
| 4k 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
| 10.4k views
12,783 questions
183,442 answers
172,219 comments
4,824 users