1 like 1 dislike
5.4k 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
| 5.4k 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:172.69.58.3
©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
| 3.5k 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
| 9k views
12,783 questions
183,442 answers
172,219 comments
4,824 users