1 like 1 dislike
10.4k 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
| 10.4k 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:172.69.17.67
©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
| 6.8k 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
| 16.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users