1 like 1 dislike
12.5k 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
| 12.5k 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:104.23.197.64
©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
| 19.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users