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

2 like 0 dislike
16.3k 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 | 16.3k 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:172.70.100.103
©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 | 6.6k 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 | 10.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users