2 like 0 dislike
11.5k 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 | 11.5k 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:172.70.127.53
©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
| 4.5k 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
| 6.8k views
12,783 questions
183,442 answers
172,219 comments
4,824 users