1 like 1 dislike
8.4k 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
| 8.4k 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
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
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
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
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){
  ^~
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
 ^~~~
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);
       ^~~~~~
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
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
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
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:108.162.216.250
©2016-2025

Related questions

0 like 0 dislike
26 answers
[Exam] asked Dec 9, 2017 in Midterm by thopd (12.1k points)
ID: 36751 - Available when: 2017-11-15 14:10 - Due to: Unlimited
| 5.4k views
2 like 0 dislike
77 answers
[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
| 13.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users