Midterm Question 2

1 like 1 dislike
6.4k 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

 

[Exam] asked in Midterm by (12.1k points)
ID: 32706 - Available when: 2017-11-15 14:10 - Due to: Unlimited | 6.4k 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:172.70.131.136
©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 | 4.2k 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 | 10.8k views
12,783 questions
183,442 answers
172,219 comments
4,824 users