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:172.71.255.2
©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