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

2 like 0 dislike
6k 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 | 6k 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:172.71.254.133
©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 | 2.3k 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 | 3.6k views
12,783 questions
183,443 answers
172,219 comments
4,824 users