1 like 1 dislike
1.4k 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
| 1.4k 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:172.70.127.24
©2016-2024

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
| 974 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
| 2.3k views
12,783 questions
183,443 answers
172,219 comments
4,824 users