10-19 Exercise 1: International Standard Book Number (ISBN)

2 like 0 dislike
2.8k 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

 

[Exercise] Coding (C) - asked in Chapter 5: Selection Statements by (12.1k points)
ID: 27667 - Available when: Unlimited - Due to: Unlimited
edited by | 2.8k views

77 Answers

1 like 0 dislike 
Hidden content!
#include *  *  ***  * *** 
int main(void)
{
int  * **   *   * ** **  * **  ,sum, check;

* * *    **  *  * ****** ***  *  * *** *  * *  ** *  *   * * **  &i3, *    *       *   &i6  * ** *   * *   *** * **** * * * *  *   *** *     * **       * 

sum  * * *** *   *   **    ** * * * **
  *    *
if  ** * * ***
         ** **  
*  **   ****** *  ***  ** * ** * ** * * *     ****  * *  *  * **    *  

*   ** ***  *   *
else
**  *  * ***** **  **** **   *** **** *   **  ** 



return 0;
}
answered by (-304 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
1 like 0 dislike 
Hidden content!
#include <stdio.h>


int main(void)

{


  **   **** *  *****  *   * **** **  *   *****  *     ** **    *        **
   * ****      *****  ** check_1,check_2;


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

    * **  ** **  ** * * * *   ** *   ** ** * *****   **** ** * * ***  ** *** *    **     * *   ***  * * *  
 **      * * *     *  **     10-(check_1%10);

*  *  * ******        *   (check_2 == num13)
*   *  * **   *   **   * *

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

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


 *  ** * *  *   **** * 0;

   }
answered by (-107 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
1 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,x,y;
  ** *  *   **  *  ****   *** *  *** ***  *** * ***      *** ****** ** ** ***     ****  *** ***   ***** **** *          ** *  *  * **  *  *   ***  *  **   * **** *  ** *
 *  *     ** * * ***  * *    ***  * **  * * *** * *   *** **
**    ***    *   ** **  * **** * 10-(x%10);

   **   *  ** ** ***   *  *  *****  **
* *  * **** * ****  * * *****  * ** * *   ****   * **   ** *******   * 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
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>


int main(void)

{


  **  ***  ***    **** * *  * * *  **** * *    ** *  ***  **  * ****  **** *    
  *   * ** *** ** ** *    **  * last_num, check_1,check_2;


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

** **  * *  *  ***  *   *  ***  ** ****** *    ** * **  * *  **  * **   ** * *  **  *** *  * 
   ******    ** *  **  *  **  * 10-(check_1%10);

*  **  ********  ** *   (check_2 == num13)
 *********   *  *      **    

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

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


** * *** **  *  *****   ** *  0;

   }
answered by (-107 points)
0 0
prog.c: In function 'main':
prog.c:10:9: error: unused variable 'last_num' [-Werror=unused-variable]
     int last_num, check_1,check_2;
         ^~~~~~~~
cc1: all warnings being treated as errors
commented by (4.3k points)
1 like 0 dislike 
Hidden content!
#include **  ***** *       
int  ** *  **** * *   **  **  *** * 
int b,c;

int main()
{
 *   *  * *  *  *  *       *  *   *  *** **     ****    *  * * **   ** *  ** *      *   **        *  *     * * *  *** ****  **    ****    ***** * **  *  * * **

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

b=b%10;

c=10-b;


if (c==a13)
*  **   **** ****       ***   *     *  *  *   *   **** *   *  *
else
* ** **** ***  *  *  ****** * *      ***  *****   ***  **  

return 0;

}
answered by (-336 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
1 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,x,y;

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

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

  ** **  ** * *  * *     * *** (y==m)
* *  ** ****    *  *** **      *** ** ** **   *    ***  **    ***   ISBN");
* *** ****** ** ** *  *    * *** *
 ***** *    *  *    *   **  *  **   ** **  ISBN");

  *  ******  ** **  * * * * ** 0;
}
answered by (-127 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include *   *  *    *****
int      * *** *  ** * * *****   *
int b,c;

int main()
{
 *** ***    * *** ** * * ***      * * *  **  *  *  ** *  **     ** * ** *   ** **   ****  **    * *   * **        * * *  * *    ***  *  ***  

*   *   * * *  ** * ***  ****  ** * *
********   * ***    ***  
b=b%10;
** *   **    *****  *
c=10-b;
      * ** * *  *    
 ** ****    ** *** *   *** *

if (c==a13)
***** ** * ****  ****** *  ** * *  **  ** *** * ISBN");
else
 ** ** ***** ** **  **** ** ** ** * * **  * ISBN");

return 0;

}
answered by (-336 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
1 like 0 dislike 
Hidden content!
#include ***  **** **   

int main()
{
 int  * **    * **  ***
 *    * **  * **   ** ** *  *  * **  * *         * * **      ** *   *    ** * **  **  ** * * * ***** *     ** *****   *** ***     *  *  *    *  
  * *** *     ******   ***
if (i == 10-h)
{
   *    * * *****   **        ** * ** **  * *  * ** *
}
else
{
*  ****** **** *** * *  *     * *  **      ISBN");
}
}
answered by (-229 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
1 like 0 dislike 
Hidden content!
#include<stdio.h>

int main() {
* *  * ** *   *   **   *** **  ** a[13], i, b=0, c;
 * *       * ***  **** * ***    *** i<13; i++) {
     *******    *  *  **  ** ** **  *    *  ****     **  ***** *** * * **   &a[i]);
***  * * *  *       *  * *  
*   ***  *******  ***   ***  * * **  *  * *    * **   * * ***** * **
   *** ***       *  *** * **   *  ** 
 * * ****  ****   * ** *   ****    ***  {
** *** **     *   **** *   **   ***  **    *  * *    ***** * *  ** ** **  *   * ISBN");
   **   * *    *    *   ** 
      *  ** *       **  ****   * *  *   {
 *** *** *   * *     * **    ****  * **** *****  ** * **** ** *   ISBN");
   ** * * ****   * *** ** *
}
answered
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
1 like 0 dislike 
Hidden content!
#include <stdio.h>

int main()
{
* ** **** ** *   ** * *** ** *  *  ** *** ** **     **   *   *

*  *       *** **  *  *  **    ** ** * **  * ** * ***    ** *********   *    * * * *****       *  * *   **       ** *  * *** * * *** *  ** * *** ** *  ******    ******** * 
   // *  *   *  **** ** ** **   ** ****  * * ****      *  ***** *  * ****  ***** *  
** * *** **  * *** ** ** *** * ***  **  ** *** *   
***  *** *    ***  **  **  ** ***  ** 

   // printf("%d %d",total,check1);
    if (check1==check2)
 *****    ** **  *** **       * * *  ** ** *  *  ** 
    *****  ** *   ***  *   ** * * *   * **  *  ******** ** **** *     *** * * *   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
commented by (4.3k points)
Page:
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:108.162.216.244
©2016-2024

Related questions

0 like 0 dislike
26 answers
Midterm Question 2 - Makeup
[Exam] asked Dec 9, 2017 in Midterm by thopd (12.1k points)
ID: 36751 - Available when: 2017-11-15 14:10 - Due to: Unlimited | 1.2k views
1 like 1 dislike
49 answers
Midterm Question 2
[Exam] asked Nov 15, 2017 in Midterm by thopd (12.1k points)
ID: 32706 - Available when: 2017-11-15 14:10 - Due to: Unlimited | 1.8k views
12,783 questions
183,443 answers
172,219 comments
4,824 users