1 like 1 dislike
6.8k 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
| 6.8k 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:108.162.216.187
©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
| 4.5k 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
| 11.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users