1 like 1 dislike
6.6k 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
| 6.6k 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:172.70.127.115
©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
| 4.3k 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
| 11.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users