1 like 1 dislike
1.6k 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
| 1.6k 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:172.70.127.46
©2016-2024

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
| 1k 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
| 2.7k views
12,783 questions
183,443 answers
172,219 comments
4,824 users