1 like 1 dislike
9.4k 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
| 9.4k 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:172.71.255.107
©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
| 6.1k 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
| 15k views
12,783 questions
183,442 answers
172,219 comments
4,824 users