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

2 like 0 dislike
11.2k 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 | 11.2k 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:172.69.17.12
©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 | 4.3k 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 | 6.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users