1 like 1 dislike
6.7k 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
| 6.7k 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:172.70.131.139
©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
| 4.4k 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
| 11.4k views
12,783 questions
183,442 answers
172,219 comments
4,824 users