1 like 1 dislike
12.5k 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
| 12.5k 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:104.23.197.65
©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
| 7.7k 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
| 19.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users