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:172.70.178.44
©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