Midterm Question 2

1 like 1 dislike
11k 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

 

[Exam] asked in Midterm by (12.1k points)
ID: 32706 - Available when: 2017-11-15 14:10 - Due to: Unlimited | 11k views

49 Answers

0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include   * *  **   *** *

int ISBN[13];
int sum;
int checkdigit;
int main()
{
*  * * **   ** **       *  ******** *  * *   * * ** *  * ***     * *  * * ******* * ***** **   * * ** **  *  *  * * * *   **  *** *  **  ***** *    ***** *  **  *    * ***      ***   **    ****   ** *      ****   **


* *** ****  ** **  * **  **** *  =  **  ****   *  *     * *****   *** ***       * * *****   ***   * **   *    *

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

 * ** * ** *  *  ** *  * * **   0;
}
answered by (-286 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()
{
 *** *  *  ****  * **  *** * a,b,c,d,e;
*     * *** ** *  *** *   *  **  f,g,h,i,j;
  ***** ***** * ******  ***   k,l,m,z;
       **** *   *  ****  ** ** *     *   * ** ***     **  ** ***  *  * *   *       ***  ***      * * **      ** ****** * **  *     *   *     **  *  *** 
** *   *   * **** *  ****  ***** * *  ** *** *    * **  
**  *    ***    **** * **  **   (z==m)
***** *******   ***** ****   
 ** *  *  * **   * *  * *    **  *  *   **** * * ** ***  ****  * ISBN");
    }
 ** *** * **** ** **   ** ***  
*  **  **  ** ** **    * *****
 * * * **  **   * * **   * * ***  **** ****  * **  ** *   *   *    **  **    ISBN");
    }
 *   ** * *  **** *****    0;
}
answered by (-229 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>
//isbn number
int main(void)
{
    **   * *  * *    ** * * *** *   ***** **  *      * * * *  *  *** * 
**   * **    *  ****  *   *   ** ***   **   * * **** ** **          *     *  ***  * *  * * ** * *   **         * *******  * * ***** *** *       ** ** **     *  ****  *      ******  *
 ***   * * *   *    * **    *  * * *    * ** * ** *    * **
*    * ** ***  **  *    * *   *    **   * ** 
** *         *** *** *  ** * *** *  *  
**** *  *  * * * * *    * **     *     ** ** *    ** * * * * ***** **   * ISBN");

 ** ******* ******    **   *  * printf("Invalid ISBN");
     * *  *  ***  * **     ** * 0;
}
answered by (-304 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(void)
{
*     *    ** * ***      * ** * *  * *  ** ** *  *****  ** * ****
**      **  *  **  * *  * ** * ******     **   * *  **  * ** *  ****** ***  **** *****    * ** * *   ***   * *  * ***   **  * * * ** * ***** **   ****   *  * * *    ****  * *

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

* ** ** * ***     ***  *  * *** * *  **
 *       ***** * ** ***  
  *    *****   * *   *  * ****     *   **    ** *   * **   ** *** ISBN");
    }
**           *  *      * *
    {
*** **  * ***  * ***********  *  *** *   *  *  ***   *** *    *    ISBN");
*** * ****    ** ***   *** **
  return 0;

}
answered by (-249 points)
0 0
Case 0: Wrong output
Case 1: Wrong 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>

int main()
{
*    ***** *  **    *** **  **  *****  *    **  * ** 
 * *  * *  * ***   **  **   **      *   *  ** **  **   * 
***** **  ** *      ********  *   *           * **   ***
* *  * **   ***  * *** *  ** *** **    *  
*******     * *   * **  *  *   (m==o)
  * *      ** ** ** *  *  ** *   * *   ISBN\n");
****   * ****   *  **  * *   *

  ** *  ** ***  ** **     *     *** 0;
}
answered by (-284 points)
0 0
prog.c: In function 'main':
prog.c:7:13: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
     scanf("%d",a,b,c,d,e,f,g,h,i,j,k,l,m);
             ^
prog.c:7:11: warning: too many arguments for format [-Wformat-extra-args]
     scanf("%d",a,b,c,d,e,f,g,h,i,j,k,l,m);
           ^~~~
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include  ** *******  ***
#include         ** * * 

int main()
{
 ***     * ***** * * * * *     * a, b, c, d, e, f, g, h, i, j, k, l, m;

  * **  **  ** ***     *  * * * ** total = 0;

** ** ***** ***    **   *  * * check = 0;

*  *   * *    ******* *  ** ***   ****    *  **  * ****   *   *  * *     * *  * *** * *   **  *       *     * * ** *   *      *  **   * ** *   ***     &j,  * * ****   ** *  **    *

 *** * *  * *******  **  *** *    * = a*1 + b*3 + c*1 + d*3 + e*1 + f*3 + g*1 + h*3 + i*1 + j*3 + k*1 + l*3;

**  *    * **    * **   **   *   = 10 - (total % 10);

   *  ** *****  *           *  ***   = m)
*  *** *    ***   **** * 
   ***  *    ****** ***    ** ***** * *  ** *  ****    ** *  *  **  *   * *  *
** *** *       *** ** *** *
* *      *  **  ** *     *  * *****
   * ***** ** *** * **  
* *  **  *   * *****    *******   * **  ** *****   *  *  **    *   * * **   *   * * **   
    ***  *   *   **  *   * 
}
35/100 answered by (-285 points)
0 0
prog.c: In function 'main':
prog.c:12:11: warning: zero width in gnu_scanf format [-Wformat=]
     scanf("%0d%0d%0d%0d%0d%0d%0d%0d%0d%0d%0d%0d%0d", &a, &b, &c, &d, &e, &f, &g, &h, &i, &j, &k, &l, &m);
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
prog.c:12:11: warning: zero width in gnu_scanf format [-Wformat=]
prog.c:12:11: warning: zero width in gnu_scanf format [-Wformat=]
prog.c:12:11: warning: zero width in gnu_scanf format [-Wformat=]
prog.c:12:11: warning: zero width in gnu_scanf format [-Wformat=]
prog.c:12:11: warning: zero width in gnu_scanf format [-Wformat=]
prog.c:12:11: warning: zero width in gnu_scanf format [-Wformat=]
prog.c:12:11: warning: zero width in gnu_scanf format [-Wformat=]
prog.c:12:11: warning: zero width in gnu_scanf format [-Wformat=]
prog.c:12:11: warning: zero width in gnu_scanf format [-Wformat=]
prog.c:12:11: warning: zero width in gnu_scanf format [-Wformat=]
prog.c:12:11: warning: zero width in gnu_scanf format [-Wformat=]
prog.c:12:11: warning: zero width in gnu_scanf format [-Wformat=]
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
int main()
{
  * *** ** *** * * * ***  *     *   ****  ** * *  ***  *  * ** * * * **         
*   ********   *** *  ** *** ****  *
*** *      ***   *    *    *   *  *  **  **  * *  *   *  *  *  *       * * *  *** ****  **  ** * *****  **  * *    *** ***     ***        * *** *   **** * ***** ****  *** *  * **
**   * ***  ***  ** *          ** 1*(n1+n3+n5+n7+n9+n11);
  *** *  *    * *****    * **  3*(n2+n4+n6+n8+n10+n12);
*  **  *  **  *  * * **  of first 12 numbers
****** *   ** *** * **        sum1+sum2;
 ** **   ***  *  *   **  *  * *  ** 10 - (sum3%10);
**    **    ****  * * ** * * check digit
    * **** * **   *   *** **  **  ** 
   **    * *      ** *** **** 
 ** ***  ***** **  ***** *** *   **** * ** **** *  * ***    *  ***  ISBN");
*** ** ****     *   *** *
* **    ***    **** *    ***** * **
    {
*    * * **   **** * *** **    *  * * ****       **** *   ** ** ISBN");
 * ********** * * * *  *** ***

 * *     ** *    *   ** * *   0;
}
answered by (-323 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>

int main()
{
 * ***  *  ****   **** a,b,c,d,e,f,g,h,i,j,k,l,m,sum=0,check;
 *********  **  *** * *   *  *  *  * **  **  *  ** *  *   * *   *     **  *  ******* ***   **  *  ** *   ** * *** *   **   ** ** *** *******  ** * *** *    *  *      * * **    

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

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

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

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

 *** ** * *  * *    * *  0;
}
answered by (-127 points)
0 0
prog.c: In function 'main':
prog.c:7:51: warning: spurious trailing '%' in format [-Wformat=]
     scanf("%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%",&a,&b,&c,&d,&e,&f,&g,&h,&i,&j,&k,&l,&m);
                                                   ^
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
int main()
{
** *  * * *** *** ***  ***  ** a,b,c,d,e,f,g,h,i,j,k,l,m,sum,che;
***** ***    *   *   * * * *    **  **** **   * ***     ***** *      * *  ** **     **  ***      * *   * ****   *** *  *   *    *** ***********    *     * ** *  *** *** ****
 ** *    * * ***     ***  *   *  **** **   * * *  **    **    * **  
  * ****   ****   *******   ** *  **
**  *  * *  ** ***** ****  **** (che==m)
**  *   * **  **   *** *
      * ** ** ***   *    * * * *  * * ** * *  *  ** *** *       *     *  ISBN");
    }
**     *     *        
     * ** **  * ***   *  *   * *  *****
******* * **** **** ** * **   ***   * ** **   *  * *  * *  *     ISBN");
 **     *********** ** * *
}
answered by (-214 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()
{
 * *** **  ***  * *   ******* *** a,b,c,d,e,f,g,h,i,j,k,l,m,n;
   ** ** *   ***** * *    *** *  ***   *  ***   *  ** **  *   **    * * **  ** ***** *  *** *****  *    **   * * * *  ***       *  * *  * * ***** * ****    **  *  ** * ** *
* * *  * * **   * ** ** ***** *   *  **  * *****  *   *
** ******* *  * **  **     * * **** **
    {
*    *** ** *    **  ** * *    * * * *  *   *    * *** ** *** *    *   *  ISBN");
*  *  *  * **     **  * * **
 **** ** ** * *****  *   *   * * 
 ***   **** ** ** * ******* *
**  *   ** ** **** ** ***  * * *    *** * ** * ** *  *****  *** ** * ISBN");
* ** * * ** * *  ** **   

}
answered by (-255 points)
0 0
Case 0: Correct 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:104.23.197.194
©2016-2026

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 | 7.1k views
2 like 0 dislike
77 answers
10-19 Exercise 1: International Standard Book Number (ISBN)
[Exercise] Coding (C) - asked Oct 19, 2017 in Chapter 5: Selection Statements by thopd (12.1k points)
ID: 27667 - Available when: Unlimited - Due to: Unlimited | 17.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users