2 like 0 dislike
14k 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 | 14k 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:172.69.6.173
©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
| 5.7k 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
| 8.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users