1 like 1 dislike
6.1k 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
| 6.1k 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:172.69.59.125
©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
| 3.9k 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
| 10.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users