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

2 like 0 dislike
9k 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 | 9k views

77 Answers

0 like 0 dislike 
Hidden content!
    *  *   **** *    
int main  * * *
{
int  * *  *   ****** *  * ***   * **** 

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

    * ** + *  *  + (d3*1) + (d4*3) +   + (d6*3) +  ***  + ****   + ***    +   * +   *  +  ** *

*** *    ***  


if **   == 10)
** ****         * *   *** **** = 0;

if ****  == d13)
* * ********* ***  *  **  * ** *  *  **    *   **   **

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



 **  0;





}
answered by (-249 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include ** **** *** * *  
#include *  * * * *** **

int main()
{
 ***  **    * *    * * *      ** * **** *   ** * * * *
   * *   *  *  **  *  **** * * ** **    *  %1d %1d %1d %1d %1d %1d %1d %1d %1d %1d %1d *      ***  ** *  * * ****    * **  ** **  **  * * * ** **** ***  ** *   ***  ***** *    ***** ** *    *
*  *    * * **  ** *** *** *   + b*3+ c*1 + d*3 + e*1 + f*3 + g*1 + h*3 + i*1 + j*3 + k*1 + l*3;
   *** ** **  *    ** ****** **   * ** 
   ***    * * *   * **     * *  *** ** 
  **** *** ** **  ***  * ** * *   *  *     ** * *     * **  ***    * ISBN");
* **** ** *     *   *   *
*  * ****  **  ** * * ****  * *   * **** *** * *** * ***   **   ** ** * * ISBN");
  *  ****  **      * * ****** *   0;
}
answered by (-258 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 *  * *****  **  

int main()
{
 int ** * *  ** *  **** * * 
   **  ***   *  ** ** *  ** * *  * * *** **      ** * * **       **** *     **   *** * * *    *** **    * * * *  ***** * ** ** * *  *   
* * *****  *  ** *** **     **  
if (i == 10-h)
{
 *  *    *********  **** ***         **       *  * * 
}
else
{
         ** ****      *  * * ** * *  *  **  *  ISBN");
}
}
answered by (-329 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 main()
{
int    * * *    ** * **
***  ** ** * ***   *    *** * **  ***** *  * *  * **  ** *****   * * **** *** * ** ** * **   ***    ** * **   * *    * *       *  **    *     * *  *  *** ** 
n=      ***    *   * **    **  
if (m == 10 - n)
{
** *  *   ** * ******  *   
}
else
{

   *  ***** *  ****** ** *
}
}
answered by (-329 points)
0 0
prog.c: In function 'main':
prog.c:5:7: error: too many arguments for format [-Werror=format-extra-args]
 scanf("%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d",&a,&b,&c,&d,&e,&f,&g,&h,&i,&l,&j,&k,&l,&m);
       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
commented by (4.3k points)
1 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
int main(void)
{
  ** ****  **** ****** *  **  digit[13];
*    * *    **** * **** ** *  *  a,d=0;
  **  ** * * **    ** * ***** * * **  **   * **  *  *** *  *** **   **  * * *    *  * * *** ***  **** * ** * *** ** *   ** *** ******** ***  ***  *   *  *  * * **  * * **** ***** * ***** *  *  ***** **  *** * ***   ****  *** ** 

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

* **   ***  ***    * **   ** ** *  **
  ** **   *    **   * ***** * *  
 ** **      *   *   * ** *
 * *  * ** * ** *   *  ** **  ** *  **** *  *   *   *  ** *   **  * * * ISBN");
    }
** ***** *   * *** *    
   **    * * *  **** * * ** * 
    **  **     **   * **** **     *  * **   *    ** ** ****** *     *****    **     ISBN");
*   *** ** ***** * ****  * ***
    * * *** ***  **  *** ** * * 0;
}
answered by (-168 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>
#include <stdlib.h>
#include <math.h>
int main(void)
{
*  ***  *** ***** ** **  ** ** digit[13];
* ** ** *   *   *   *  * **  i,a,b,c,d=0;
  *  *    ***  **  *    **** **** 
 * *** * ****      * * *** *  ** *** * ** ***   **  ** **     *  *****  ****  *    *  *** **    *  **    **  * * *  ***   * *  ** * *  **  *  * *   *  ** *   **  *  * * **** *** ** ***    *   **** ****    *   * ****** * **

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

 ** *** ** **  ** **    * *  *  **  **
**** *** *    * *       ****  *
    {
  * ***    * **   *   *  **** ** ** *** ***       ** **  * *   *** ISBN");
    }
* *   * *** *     * **    *** 
  * * * * ***  *** *  ****   *  
** **       ***  *   *   * *  **  *****   ** *** *  * * ** ***** *   *      ISBN");
******** *  *    **    * * *
****  **** **   *   ******  * ** * * 0;
}
answered by (-168 points)
0 0
prog.c: In function 'main':
prog.c:7:15: error: unused variable 'c' [-Werror=unused-variable]
     int i,a,b,c,d=0;
               ^
prog.c:7:13: error: variable 'b' set but not used [-Werror=unused-but-set-variable]
     int i,a,b,c,d=0;
             ^
prog.c:7:9: error: variable 'i' set but not used [-Werror=unused-but-set-variable]
     int i,a,b,c,d=0;
         ^
cc1: all warnings being treated as errors
commented by (4.3k points)
1 like 0 dislike
Hidden content!
#include <stdio.h>

#include <stdio.h>

int main()

{
* * * * * * *** **** * **** * ******* * ****
** *** *** *** *** ** * * **** * *** *** *** ** ****** ***** ******** ** * * ***** ** ** ** ** ** * ***** * **** * * ** * *
* ** ** **** * **** ** ****** **** ** * * ** *
* ** * * * ***** *** *
* * * * * *** * * printf("Valid ISBN");
*** * * ***** * **** * *** **** * * ** * * *** ISBN");
** * *** * * * ** * ****** 0;

}
answered by (-140 points)
edited by
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()

{
** * * ** ** * * * * * ** ** * * * * ****
* * * * ** * * * ** *** ***** * * * * * * ** * ****** * **** * * * ****** ** ** * ** *** ** ****** *** ** * *** * ** *** * *** * **
** * ** * *** * ** * ** * **** **** ***** * ** * ** **
* * **** * ** ** * *** *** ****


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

    }

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

   }
* * * * ** ** ** * *** * **** *** **** ** *** 0;



}
answered by (-140 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()

{
* ** * * ** * *** *** * ** ** *** * * ** *** * *** *
* *** **** **** * * ** *** * * ** ** ** ** * * ** * * * * ** * * * ** * *** ***** ****** ***** * * *** * *** ***** ** * * * *** *
* * ** * * *** ****** ** **** *** *** ***** ***** ** *
* *** * ***** * ** * * * * * * ** * *


*** * * * * * * *
** ** **** * *** * ** *** * ****** *** * * * * 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
commented by (4.3k points)
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
commented by (4.3k points)
Page:
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.69.7.154
©2016-2025

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 | 3.5k 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 | 5.4k views
12,783 questions
183,442 answers
172,219 comments
4,824 users