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:172.70.126.132
©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