1 like 1 dislike
12.3k 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
| 12.3k 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:162.159.115.9
©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
| 19.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users