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:172.70.100.146
©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
| 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