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:172.70.100.47
©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