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:172.70.131.70
©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