1 like 1 dislike
12.2k 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
| 12.2k 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:104.23.197.119
©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
| 19k views
12,783 questions
183,442 answers
172,219 comments
4,824 users