1 like 1 dislike
3.6k 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
| 3.6k 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:172.70.127.104
©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
| 2.3k 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
| 5.9k views
12,783 questions
183,443 answers
172,219 comments
4,824 users