1 like 1 dislike
5.4k 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
| 5.4k 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:172.70.126.40
©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
| 3.5k 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
| 9k views
12,783 questions
183,442 answers
172,219 comments
4,824 users