1 like 1 dislike
10.7k 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
| 10.7k 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:172.70.126.217
©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
| 6.9k 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
| 16.9k views
12,783 questions
183,442 answers
172,219 comments
4,824 users