1 like 1 dislike
10.4k 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
| 10.4k 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:172.71.120.60
©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
| 6.8k 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
| 16.8k views
12,783 questions
183,442 answers
172,219 comments
4,824 users