1 like 1 dislike
8k 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
| 8k 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:108.162.241.238
©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
| 5.1k 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
| 13.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users