1 like 1 dislike
10.2k 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
| 10.2k 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:172.70.179.145
©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
| 6.7k 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
| 16.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users