1 like 1 dislike
10.2k 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
| 10.2k 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:172.69.7.77
©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
| 6.7k 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
| 16.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users