1 like 1 dislike
11.7k 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
| 11.7k 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
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:162.159.115.41
©2016-2026

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
| 7.4k 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
| 18.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users