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:141.101.69.47
©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