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

2 like 0 dislike
13.6k 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 | 13.6k 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:172.69.130.53
©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 | 5.4k 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 | 8.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users