2 like 0 dislike
10.7k 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

 

[Exercise] Coding (C) - asked in Chapter 5: Selection Statements by (12.1k points)
ID: 27667 - Available when: Unlimited - Due to: Unlimited

edited by | 10.7k views

77 Answers

0 like 0 dislike
Hidden content!
#include <stdio.h>

int main()

{
* ** ***** * ** *** *** * * * ***** * * * * ** * *
****** ** **** *** *** *** * * * ** * **** * * * ** *** *** ** *** * ***** ** ** *** ** * * ** *** *** * ** * *** ** * * * ** ***** * * ***** *
** ** * **** ** * *** ** ** **** * **** *** * * * ** **
** * * * ****** **** * *** *** *** * * *


* * *** * ** **** *** ***
* ****** ** * ** **** * * ** * * * ** ** ******* * * * ISBN");

    }

   else{
* * * * * * ** ****** *** ** * * * * * * * ISBN");

   }
******* ** ** *** * ** ** * * ** * ** * * 0;



}
answered by (-140 points)
0 0
Case 0: Wrong output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
1 like 0 dislike
Hidden content!
* * ** **** ** ** **


** **

{
** * *** ** * ** *** * * ****


*** *** * *** ** = 0 ;


* * * * ** * *** * *** * %1d %1d %1d %1d %1d * * * * * ** * ** * *** * **** * * * ***** * * * * * ** *** * * ***** ** **


*** ** ** ** * = a*1 + ** + c*1 + d*3 + e*1 + f*3 + + + * + * * + * +


* ** *** * * = 10 - ** * % ** *


* **** * ***** * == m )
* ** * * *** ** * * **** ** *** ** * ** *
* * * *
**** * * * ** ** * **** * * ** * ** *



}
answered by (-285 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!
* ** * * *


** ***

{
** ** **** ** int * ** * * **


* * * * ** int * = 0 ;


* * * ******* * *** ****** *** ** * * ** * * ***** *** ***** * ** **** * ** ** *** *** * * * * **** * ******* * ** ******* *** ** * * ******


* **** * * * ** * = a*1 + b*3 + c*1 + d*3 + e*1 + * + g*1 + h*3 + i*1 + j*3 + k*1 +


*** ** * *** * ** = 10 - * % *


***** **** *** if( ** == m )
* *** * * * * *** *** **** * * * ** *** * *
**** * * **
* ** ***** ** ** * ** *** ** ** **** ***



}
answered by (-285 points)
0 0
prog.c: In function 'main':
prog.c:9:50: error: format '%d' expects a matching 'int *' argument [-Werror=format=]
  scanf("%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d",&a,&b,&c,&d,&e,&f,&g,&h,&i,&j,&k,&l,&m);
                                                  ^
cc1: all warnings being treated as errors
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,p;
* * *** * * * *** * *** * ** *** *** *** * ** *** *** * ** * * *** *** ******* *** *** * * * * ** * * **** *** *** *** *** * ** *
** * * ****** ** ** **** ***** * *** ***
** * ** ** * * *** * **** *
***** * ** *** *** ** ****
* *** * ** * ** *** * **
* * * * ** * * *** **** * ** ** ** * ** ** * *** **** ** ISBN");

    }
** *** ** * ** **
**** * * * * **** * *
**** * * ****** * * * * * *** ** *** ** ** * ISBN");
** * *** *** ** * * *
* * * *** * * **** * ** 0;

}
answered by (-498 points)
0 0
prog.c: In function 'main':
prog.c:10:5: error: suggest parentheses around assignment used as truth value [-Werror=parentheses]
     if(p=m)
     ^~
cc1: all warnings being treated as errors
0 like 0 dislike
Hidden content!
* * ** * * *****


*

{
* ** * *** int ** * ** ** **


* ** ** * * int = 0 ;


*** **** ** * ** *** * ****** * * ********** *** ** ** **** ** * * * *** *** ***** ** ** * * ***** ** * **** * * *** * *** **** *** *** **


** * * * * = a*1 + b*3 + c*1 + d*3 + e*1 + ** + g*1 + h*3 + i*1 + j*3 + k*1 +


*** **** ** * = 10 - * * % * *


**** * * * if( ** == m )
*** * * * ** ** *** *** *** ** ** * *** ***
*** ** * * *
** * **** * **** ****** **** * * * ** **



}
answered by (-285 points)
0 0
prog.c: In function 'main':
prog.c:9:50: error: format '%d' expects a matching 'int *' argument [-Werror=format=]
  scanf("%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d",&a,&b,&c,&d,&e,&f,&g,&h,&i,&j,&k,&l,&m);
                                                  ^
cc1: all warnings being treated as errors
0 like 0 dislike
Hidden content!
** ** ***


* * *

{
* ** * * ** * int * * * ** *


** * ** ** int ** ** = 0 ;


* ** * * *** ***** * *** * ** ** ** * *** *** *** ** *** *** ** ** ***** *** ** * * ****** * ** ** * **** ** * * ****


** ** * ** ** * = a*1 + b*3 + c*1 + d*3 + e*1 + ** + g*1 + h*3 + i*1 + j*3 + k*1 +


* * = 10 - * % **


**** *** if( **** == m )
** ** * * *** * * * * *** * ** ** ** **** *
* *
* * * ** ** **** ** * *** *** *** *



}
answered by (-285 points)
0 0
prog.c: In function 'main':
prog.c:9:50: error: format '%d' expects a matching 'int *' argument [-Werror=format=]
  scanf("%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d",&a,&b,&c,&d,&e,&f,&g,&h,&i,&j,&k,&l,&m);
                                                  ^
cc1: all warnings being treated as errors
1 like 0 dislike
Hidden content!
#include <stdio.h>

int main()

{
* * ********** * * ** ** ** * **** ** * * *** *
** * * * * * * *** * * * ** * * ***** * *** * * * * **** * ** * ******* ** ** ****** * **** * **** ** ** ** *** ** * * * *
*** * ** * ** ***** * ******* ***** **** ** * * * * ***** ** * * *


* **** * *** * * * * *
** ** ** **** * ** ** * * ** * * *** ** *** **** * * ISBN");
** **** * * ** * *****

   else{
*** *** * * * * ** *** ** ** * * * * * * *** * * * * ** * ISBN");

   }
* * **** * * * * * **** * * * *** 0;



}
answered by (-254 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()

{
** * * * * *** * * * * * ** *
**** * * *** * ***** * ** * * * * * * * ** * * ** * * ** * * * **** ** * ** * **** *** * * ** ** **** ** * * *** ***** * ****** * **** **
* **** * * **** * * *** ** * * ** * *** * * ** *** *


* * ** * ** ** * * * * * *** *
* * ** * * *** * * * ** * * ** **** * * * * * ISBN");
* * *** ****** *

   else{
** * * *** * ***** * * ****** ** * **** *** *** * ISBN");

   }
** * *** * * **** **** * ** *** ** * * * 0;



}
answered by (-254 points)
0 0
Case 0: Wrong output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>

int main()

{
* ****** ** ** * ** * * * * * ** ******* **** ** ** *** *
*** * * * ** ** ** * * * **** ** * *** ** **** * * ** ** ** ** *** * ** ** *** * ** * * * * * *** ** * * *** * * * * * * * **** * * * * *
* * * ****** ****** * * * ** ** * * * ** * *** ** * * * *** *** *


** * *** * * * * * * ***
* * *** * * * ** ** ** * *** * *** * *** * * * * ** ISBN");
** *** * * * *** *

   else{
** * ** **** * ** * **** * * * * ********* * ISBN");

   }
******* **** * * * * * * *** ** *********** * 0;



}
answered by (-254 points)
0 0
Case 0: Wrong output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>

int main()

{
** * * * * * *** * * *** ** ** ***** *
** *** *** * ** * ** * * * * * *** ** * * *** ****** **** * * *** * * * ** * * * * * **** * *** ******* *** *** ** *
** * * * * * ** *** * * ** ****** * * * *** ** ** ** *


* **** * * * ** * * *** ** * **
* * * * ** **** * * * *** ** **** *** ** ** *** * ** * ISBN");
**** * * ******* ** * * *

   else{
* * * * * * ** * ** * * * ** * *** * *** * * * *** ISBN");

   }
* * * ** * * * * * * ** * * * ** ****** 0;



}
answered by (-254 points)
0 0
Case 0: Wrong 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:172.71.254.80
©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
| 4.2k views
1 like 1 dislike
49 answers
[Exam] asked Nov 15, 2017 in Midterm by thopd (12.1k points)
ID: 32706 - Available when: 2017-11-15 14:10 - Due to: Unlimited
| 6.4k views
12,783 questions
183,442 answers
172,219 comments
4,824 users