1 like 1 dislike
1.6k 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
| 1.6k 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:172.70.100.192
©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
| 1.1k 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
| 2.8k views
12,783 questions
183,443 answers
172,219 comments
4,824 users