1 like 1 dislike
8k 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
| 8k 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:141.101.69.48
©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
| 5.1k 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
| 13.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users