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

2 like 0 dislike
15.4k 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 | 15.4k 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:172.70.80.170
©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 | 6.3k 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 | 9.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users