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:108.162.216.181
©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