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:172.70.80.53
©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