1 like 1 dislike
6.1k 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
| 6.1k 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:172.71.255.17
©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
| 3.9k 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
| 10.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users