1 like 1 dislike
1.4k 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
| 1.4k 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:172.70.100.115
©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
| 980 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
| 2.3k views
12,783 questions
183,443 answers
172,219 comments
4,824 users