1 like 1 dislike
6.4k 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
| 6.4k 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:172.69.59.175
©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
| 4.2k 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
| 10.8k views
12,783 questions
183,442 answers
172,219 comments
4,824 users