1 like 1 dislike
10.2k 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
| 10.2k 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:172.69.17.66
©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
| 6.6k 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
| 16.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users