1 like 1 dislike
8.6k 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
| 8.6k 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:172.70.194.139
©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
| 5.7k 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
| 14k views
12,783 questions
183,442 answers
172,219 comments
4,824 users