1 like 1 dislike
7.6k 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
| 7.6k 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:108.162.216.102
©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
| 4.9k 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
| 12.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users