1 like 1 dislike
3.6k 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
| 3.6k 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:172.70.126.81
©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
| 2.3k 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
| 5.9k views
12,783 questions
183,443 answers
172,219 comments
4,824 users