Midterm Question 2

1 like 1 dislike
8.7k 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 | 8.7k views

49 Answers

0 like 0 dislike 
Hidden content!
#include  ** **** **** * 
int main (void) {
int check;
int sum;
int flag;
int *** **** *  *   * *   * **** * ***  **** 
* **    *  ****    *   * * ** **     *** *   **  ****  *      ****     ** **   *  *   **     ** **  *** ***   ** *   * * *  *** ** * * *  **  ***** ***  *    ***** *** ***
*  **     ********* * *   *  ****   ****   ********* ** * **
check=10-(sum%10);

if (flag == check){
 ** **   *  * ***      ****  *  * ** * ISBN");}
 *  *** *  *** *** 
 **  **      ** ****  ****** ***  **  * *
** **  * **  * *** * * ** * **  ** * * *   *   ***  **   *  **  ** * *** * *   ISBN");
*** **      *    *****  *** *** * *  ***   * *
 return 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>
#include <stdlib.h>

float main()
{
*  * * * ****   * * ***  * **  *  a,b,c,d,e;
** ** ** * ***** **  **  *   **          *   *   *** 
* ** **  * *  * ** * * * **     
** * **  * * *   ***  ** *  *
* *** *   * **** *  *    * *     *
 * ** * *     ****  *    


** **   ** **  * * * *  **  ** ** * (a<=30)
*  * ** * ****  * *   *  * ** *  **** *  * *   *  *  *  ***   * * ***   *** *
 **** *  **      ** *   *   * ** *   **** *        (a>30<=50);
** * *** ** * *  * ******      * *   * ***** * **   *   ** ***  *       ** **  *


    if (a<=50)
  ** *  *********    * ** **** **  *    *    ** * * ***  * * * * *     ** * **** *** 
  *******   *   ** ***    *** *    *** ** **    * * *   * ** (a>50);
*    * **** *  * **  ***  **** * * *  *****  ***  ****  ** * * ******   **   * * *   

    if (a<=60)
* * ** ***  * * *** *  *  ** *  * ** **** * **    *   *   * * **  * ***  *   *   ****       
  *    *     ** **  ** * *** ** *   *  *   **     *** *   (a>60);
  ** ****  **  * *** * *** *****    ** ***    *  * * **** *** *              * **** 

 ***  ** * ***** * ** ****  *  0;
}
answered
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<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>
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 ***  *  *** * ****
int main (){
int a,b,sum,sum1,c=10;
 *   ** *  ***       **   **  ** 
** * * * **  *     **  *****     * *
do{
   * * * * ** **  ** ** **  **** 
*    ***** ** ** ****  *** *   *
 * * **  ***** ** *   ** * *   *
** * * * *       * *  * *  ** *  *   *    ** * ***** *  ***  * 
}if(c!==0){
    *  **   ***    * *    *****
sum1=c-sum;
** * *     **  * ****  
}
*   *  * *  *  * *  *

return 0;
}
answered by (90 points)
0 0
prog.c: In function 'main':
prog.c:10:12: warning: too many arguments for format [-Wformat-extra-args]
     printf("%d*1+%d*3=",a,b,sum)
            ^~~~~~~~~~~~
prog.c:11:1: error: expected ';' before '}' token
 }if(c!==0){
 ^
prog.c:11:2: error: expected 'while' before 'if'
 }if(c!==0){
  ^~
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
answered by (1.1k points)
0 0
prog.c:1:1: error: expected '=', ',', ';', 'asm' or '__attribute__' at end of input
 test
 ^~~~
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
   * ** **** ***** **



int main *    *


int  *  *            *   ***   **  ***     ***    * **  


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

**    ** + num2*3 + num3*1 + num4*3 +  * ** + num6*3 +   **  +   **  + *   +     * +  *** + *  * **

 *  **** **  *

if       * 
    *  **     *   ****  *  **

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

}

else if (check != ** * 

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




* * 0;
}
answered by (-107 points)
0 0
prog.c: In function 'main':
prog.c:11:7: warning: too many arguments for format [-Wformat-extra-args]
 scanf("%13d",&num1,&num2,&num3,&num4,&num5,&num6,&num7,&num8,&num9,&num10,&num11,&num12,&num13);
       ^~~~~~
commented by (4.3k points)
0 like 0 dislike
Hidden content!
* * * ** * * *

int main(void)

{

int *** **** ** * * *** *
** * * *** ******** ** * ** * * * * ** ** ** * *** * * * ** *** *** * * * ** * ** **** *** * * * ***** * ***** * ** **
* ** ** * * * ** ** **

check=10-(i%10);
*** * ** * * ** *
** *** *** * * * **** * **** * * ** * ISBN");}

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

return 0;

}
[] - answered by (-32 points)
ID: 33455 - Available when: Unlimited - Due to: Unlimited
edited by
0 1
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 <stdio.h>

int main()
{
   long whole=0;
*** **** **       ***      ** * *** isbn;
** **********  **  ** * ** * **   **   ***** *  ** &isbn);
** * * ** * *  * **** ** ** ** n1,n2,n3,n4,n5,n6,n7,n8,n9,n10,n11,n12,n13;

******  ****    **  ** ** *****    *  **** * 
* * *   ****  *  ****  * ***    ****   ** ***** ** 
** *   *   *    **  ** *   * * * **  *     **    *
  *** ** * *  *   *   * * * *****    **** **  * *
 ** *** ***** *  ** *** *   * * ******  * **** * *
   *    *  * * ***  *  ** **  *  **   **  * 
***   *   ***    *    ** * **  ******** *
* ***  *  * *  **  *  **** * * ***   *    * 
* ***  * ****  *   ** * **  * * *****  **
* * * *  **  * **  ****  ***  *  ** *  
  *** *        **  ****  *  * ***   
  ****  ***  **  *   * *** *       *
    ** * * **  ******   * * *  * *** 
whole =   ** ***  **    **** * * *  *****  * *   * *** * *  ***   

printf("%ld", whole);
if (10-(whole%10)==n13)
   * *** ** *    ******    **     *** ****  ISBN");
    }
***** *  *****    * * *   * 
  * *  * * *     *  *  *  * *** * *      *   ***  ISBN");
 **   ** *  * * **  * ** **** *  ***  *

** *   ****  ** **** * * * * ***** 0;
}
answered by (323 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 <stdio.h>

int main()
{
   long whole=0;
* * ** **   * * *  **  ***  ** isbn;
* * * ******* *  *   *****   * * **  *  *  &isbn);
**  * *  * ** *    ******   * n1,n2,n3,n4,n5,n6,n7,n8,n9,n10,n11,n12,n13;

 ********  **     *  *  ***  * **       * ***
* * * * * *     *****  *** * *   *       ** * *  ***
* *** ***   *  * *   **   **   **  **      ******   
    * * * ***   ***  *   *  ******  * *** **  **** *
      * ** * *   * * * ** * *** ***** * *  *  
 *   ** *  * **** *  ***   ****   * ****  ***** 
    * *  *      *  * *** *     *  *  * **  
 ****       ***   *  **     ** *** * ** 
**** * * *  ****   ** *  * * *     **  **
**   *****  * *   * *   * *  *  ** **** **
** **   * *     * * ** ****    **   * *
* *   *** ***  ***  ****  *  ** *
* *  *  * ** **  * *  *  ** *
whole = * *        *  ** *** *     * * ** *      *  * *  **** *   ***
if (10-(whole%10)==n13)
*  * ***   **   * ***    * **  *** ***  **  ISBN");
    }
** *  ***  **  ** *   *   *   ****   
  **** * * *  * * ** ***    *   * ** *   *       ISBN");
     **   ***   *   **** *  **  

**   *   ** **     ** * ****  * 0;
}
answered by (323 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong 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:172.69.214.204
©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 | 5.7k 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 | 14k views
12,783 questions
183,442 answers
172,219 comments
4,824 users