1 like 1 dislike
6.5k 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
| 6.5k 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:172.69.6.101
©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
| 4.3k 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
| 11.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users