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:172.69.58.3
©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