1 like 1 dislike
6.5k 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
| 6.5k 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:172.71.254.196
©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
| 4.3k 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
| 11.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users