1 like 1 dislike
1.6k 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
| 1.6k 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:172.71.254.81
©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
| 1.1k 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
| 2.7k views
12,783 questions
183,443 answers
172,219 comments
4,824 users