1 like 1 dislike
10.1k 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
| 10.1k 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:172.70.80.197
©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
| 6.6k 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
| 16.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users